<complex> 演算子
operator!=
2 つの複素数の間の非同等性をテストします。その一方または両方が実数部と虚数部の型のサブセットに属している場合があります。
template <class Type>
bool operator!=(
const complex<Type>& left,
const complex<Type>& right);
template <class Type>
bool operator!=(
const complex<Type>& left,
const Type& right);
template <class Type>
bool operator!=(
const Type& left,
const complex<Type>& right);
パラメーター
left
非等値をテストする複素数またはそのパラメーター型のオブジェクト。
right
非等値をテストする複素数またはそのパラメーター型のオブジェクト。
戻り値
数値が等しくない場合は true、数値が等しい場合は false。
解説
複素数が等しいのは、その実数部が等しく、かつその虚数部も等しい場合だけです。 それ以外の場合は等しくありません。
データを特定の形式に変換せずに比較テストを実行できるようにするために、操作はオーバーロードされます。
例
// complex_op_NE.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
double pi = 3.14159265359;
// Example of the first member function
// type complex<double> compared with type complex<double>
complex <double> cl1 ( polar (3.0, pi / 6 ) );
complex <double> cr1a ( polar (3.0, pi /6 ) );
complex <double> cr1b ( polar (2.0, pi / 3 ) );
cout << "The left-side complex number is cl1 = " << cl1 << endl;
cout << "The 1st right-side complex number is cr1a = " << cr1a << endl;
cout << "The 2nd right-side complex number is cr1b = " << cr1b << endl;
if ( cl1 != cr1a )
cout << "The complex numbers cl1 & cr1a are not equal." << endl;
else
cout << "The complex numbers cl1 & cr1a are equal." << endl;
if ( cl1 != cr1b )
cout << "The complex numbers cl1 & cr1b are not equal." << endl;
else
cout << "The complex numbers cl1 & cr1b are equal." << endl;
cout << endl;
// Example of the second member function
// type complex<int> compared with type int
complex <int> cl2a ( 3, 4 );
complex <int> cl2b ( 5,0 );
int cr2a =3;
int cr2b =5;
cout << "The 1st left-side complex number is cl2a = " << cl2a << endl;
cout << "The 1st right-side complex number is cr2a = " << cr2a << endl;
if ( cl2a != cr2a )
cout << "The complex numbers cl2a & cr2a are not equal." << endl;
else
cout << "The complex numbers cl2a & cr2a are equal." << endl;
cout << "The 2nd left-side complex number is cl2b = " << cl2b << endl;
cout << "The 2nd right-side complex number is cr2b = " << cr2b << endl;
if ( cl2b != cr2b )
cout << "The complex numbers cl2b & cr2b are not equal." << endl;
else
cout << "The complex numbers cl2b & cr2b are equal." << endl;
cout << endl;
// Example of the third member function
// type double compared with type complex<double>
double cl3a =3;
double cl3b =5;
complex <double> cr3a ( 3, 4 );
complex <double> cr3b ( 5,0 );
cout << "The 1st left-side complex number is cl3a = " << cl3a << endl;
cout << "The 1st right-side complex number is cr3a = " << cr3a << endl;
if ( cl3a != cr3a )
cout << "The complex numbers cl3a & cr3a are not equal." << endl;
else
cout << "The complex numbers cl3a & cr3a are equal." << endl;
cout << "The 2nd left-side complex number is cl3b = " << cl3b << endl;
cout << "The 2nd right-side complex number is cr3b = " << cr3b << endl;
if ( cl3b != cr3b )
cout << "The complex numbers cl3b & cr3b are not equal." << endl;
else
cout << "The complex numbers cl3b & cr3b are equal." << endl;
cout << endl;
}
The left-side complex number is cl1 = (2.59808,1.5)
The 1st right-side complex number is cr1a = (2.59808,1.5)
The 2nd right-side complex number is cr1b = (1,1.73205)
The complex numbers cl1 & cr1a are equal.
The complex numbers cl1 & cr1b are not equal.
The 1st left-side complex number is cl2a = (3,4)
The 1st right-side complex number is cr2a = 3
The complex numbers cl2a & cr2a are not equal.
The 2nd left-side complex number is cl2b = (5,0)
The 2nd right-side complex number is cr2b = 5
The complex numbers cl2b & cr2b are equal.
The 1st left-side complex number is cl3a = 3
The 1st right-side complex number is cr3a = (3,4)
The complex numbers cl3a & cr3a are not equal.
The 2nd left-side complex number is cl3b = 5
The 2nd right-side complex number is cr3b = (5,0)
The complex numbers cl3b & cr3b are equal.
operator*
2 つの複素数を乗算します。その一方または両方が実数部と虚数部の型のサブセットに属している場合があります。
template <class Type>
complex<Type> operator*(
const complex<Type>& left,
const complex<Type>& right);
template <class Type>
complex<Type> operator*(
const complex<Type>& left,
const Type& right);
template <class Type>
complex<Type> operator*(
const Type& left,
const complex<Type>& right);
パラメーター
left
2 つの複素数の 1 番目、または * 演算で乗算される複素数のパラメーター型の数値。
right
2 つの複素数の 2 番目、または * 演算で乗算される複素数のパラメーター型の数値。
戻り値
値と型がパラメーター入力で指定された 2 つの数値を乗算した結果の複素数。
解説
データを特定の形式に変換せずに単純な算術演算を実行できるようにするために、演算はオーバーロードされます。
例
// complex_op_mult.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
double pi = 3.14159265359;
// Example of the first member function
// type complex<double> times type complex<double>
complex <double> cl1 ( polar (3.0, pi / 6 ) );
complex <double> cr1 ( polar (2.0, pi / 3 ) );
complex <double> cs1 = cl1 * cr1;
cout << "The left-side complex number is cl1 = " << cl1 << endl;
cout << "The right-side complex number is cr1 = " << cr1 << endl;
cout << "Product of two complex numbers is: cs1 = " << cs1 << endl;
double abscs1 = abs ( cs1 );
double argcs1 = arg ( cs1 );
cout << "The modulus of cs1 is: " << abscs1 << endl;
cout << "The argument of cs1 is: "<< argcs1 << " radians, which is "
<< argcs1 * 180 / pi << " degrees." << endl << endl;
// Example of the second member function
// type complex<double> times type double
complex <double> cl2 ( polar ( 3.0, pi / 6 ) );
double cr2 =5;
complex <double> cs2 = cl2 * cr2;
cout << "The left-side complex number is cl2 = " << cl2 << endl;
cout << "The right-side complex number is cr2 = " << cr2 << endl;
cout << "Product of two complex numbers is: cs2 = " << cs2 << endl;
double abscs2 = abs ( cs2 );
double argcs2 = arg ( cs2 );
cout << "The modulus of cs2 is: " << abscs2 << endl;
cout << "The argument of cs2 is: "<< argcs2 << " radians, which is "
<< argcs2 * 180 / pi << " degrees." << endl << endl;
// Example of the third member function
// type double times type complex<double>
double cl3 = 5;
complex <double> cr3 ( polar (3.0, pi / 6 ) );
complex <double> cs3 = cl3 * cr3;
cout << "The left-side complex number is cl3 = " << cl3 << endl;
cout << "The right-side complex number is cr3 = " << cr3 << endl;
cout << "Product of two complex numbers is: cs3 = " << cs3 << endl;
double abscs3 = abs ( cs3 );
double argcs3 = arg ( cs3 );
cout << "The modulus of cs3 is: " << abscs3 << endl;
cout << "The argument of cs3 is: "<< argcs3 << " radians, which is "
<< argcs3 * 180 / pi << " degrees." << endl << endl;
}
operator+
2 つの複素数を加算します。その一方または両方が実数部と虚数部の型のサブセットに属している場合があります。
template <class Type>
complex<Type> operator+(
const complex<Type>& left,
const complex<Type>& right);
template <class Type>
complex<Type> operator+(
const complex<Type>& left,
const Type& right);
template <class Type>
complex<Type> operator+(
const Type& left,
const complex<Type>& right);
template <class Type>
complex<Type> operator+(const complex<Type>& left);
パラメーター
left
2 つの複素数の 1 番目、または + 演算で加算される複素数のパラメーター型の数値。
right
2 つの複素数の 2 番目、または + 演算で加算される複素数のパラメーター型の数値。
戻り値
値と型がパラメーター入力で指定された 2 つの数値を加算した結果の複素数。
解説
データを特定の形式に変換せずに単純な算術演算を実行できるようにするために、演算はオーバーロードされます。 単項演算子は left を返します。
例
// complex_op_add.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
double pi = 3.14159265359;
// Example of the first member function
// type complex<double> plus type complex<double>
complex <double> cl1 ( 3.0, 4.0 );
complex <double> cr1 ( 2.0, 5.0 );
complex <double> cs1 = cl1 + cr1;
cout << "The left-side complex number is cl1 = " << cl1 << endl;
cout << "The right-side complex number is cr1 = " << cr1 << endl;
cout << "The sum of the two complex numbers is: cs1 = " << cs1 << endl;
double abscs1 = abs ( cs1 );
double argcs1 = arg ( cs1 );
cout << "The modulus of cs1 is: " << abscs1 << endl;
cout << "The argument of cs1 is: "<< argcs1 << " radians, which is "
<< argcs1 * 180 / pi << " degrees." << endl << endl;
// Example of the second member function
// type complex<double> plus type double
complex <double> cl2 ( 3.0, 4.0 );
double cr2 =5.0;
complex <double> cs2 = cl2 + cr2;
cout << "The left-side complex number is cl2 = " << cl2 << endl;
cout << "The right-side complex number is cr2 = " << cr2 << endl;
cout << "The sum of the two complex numbers is: cs2 = " << cs2 << endl;
double abscs2 = abs ( cs2 );
double argcs2 = arg ( cs2 );
cout << "The modulus of cs2 is: " << abscs2 << endl;
cout << "The argument of cs2 is: "<< argcs2 << " radians, which is "
<< argcs2 * 180 / pi << " degrees." << endl << endl;
// Example of the third member function
// type double plus type complex<double>
double cl3 = 5.0;
complex <double> cr3 ( 3.0, 4.0 );
complex <double> cs3 = cl3 + cr3;
cout << "The left-side complex number is cl3 = " << cl3 << endl;
cout << "The right-side complex number is cr3 = " << cr3 << endl;
cout << "The sum of the two complex numbers is: cs3 = " << cs3 << endl;
double abscs3 = abs ( cs3 );
double argcs3 = arg ( cs3 );
cout << "The modulus of cs3 is: " << abscs3 << endl;
cout << "The argument of cs3 is: "<< argcs3 << " radians, which is "
<< argcs3 * 180 / pi << " degrees." << endl << endl;
// Example of the fourth member function
// plus type complex<double>
complex <double> cr4 ( 3.0, 4.0 );
complex <double> cs4 = + cr4;
cout << "The right-side complex number is cr4 = " << cr4 << endl;
cout << "The result of the unary application of + to the right-side"
<< "\n complex number is: cs4 = " << cs4 << endl;
double abscs4 = abs ( cs4 );
double argcs4 = arg ( cs4 );
cout << "The modulus of cs4 is: " << abscs4 << endl;
cout << "The argument of cs4 is: "<< argcs4 << " radians, which is "
<< argcs4 * 180 / pi << " degrees." << endl << endl;
}
The left-side complex number is cl1 = (3,4)
The right-side complex number is cr1 = (2,5)
The sum of the two complex numbers is: cs1 = (5,9)
The modulus of cs1 is: 10.2956
The argument of cs1 is: 1.0637 radians, which is 60.9454 degrees.
The left-side complex number is cl2 = (3,4)
The right-side complex number is cr2 = 5
The sum of the two complex numbers is: cs2 = (8,4)
The modulus of cs2 is: 8.94427
The argument of cs2 is: 0.463648 radians, which is 26.5651 degrees.
The left-side complex number is cl3 = 5
The right-side complex number is cr3 = (3,4)
The sum of the two complex numbers is: cs3 = (8,4)
The modulus of cs3 is: 8.94427
The argument of cs3 is: 0.463648 radians, which is 26.5651 degrees.
The right-side complex number is cr4 = (3,4)
The result of the unary application of + to the right-side
complex number is: cs4 = (3,4)
The modulus of cs4 is: 5
The argument of cs4 is: 0.927295 radians, which is 53.1301 degrees.
operator-
2 つの複素数を減算します。その一方または両方が実数部と虚数部の型のサブセットに属している場合があります。
template <class Type>
complex<Type> operator-(
const complex<Type>& left,
const complex<Type>& right);
template <class Type>
complex<Type> operator-(
const complex<Type>& left,
const Type& right);
template <class Type>
complex<Type> operator-(
const Type& left,
const complex<Type>& right);
template <class Type>
complex<Type> operator-(const complex<Type>& left);
パラメーター
left
2 つの複素数の 1 番目、または - 演算で減算される複素数のパラメーター型の数値。
right
2 つの複素数の 2 番目、または - 演算で減算される複素数のパラメーター型の数値。
戻り値
値がパラメーター入力で指定された 2 つの数値の right を left から減算した結果の複素数。
解説
データを特定の形式に変換せずに単純な算術演算を実行できるようにするために、演算はオーバーロードされます。
単項演算子は、複素数の符号を変更し、実数部が入力した数値の実数部の負であり、虚数部が入力した数値の虚数部の負の値を返します。
例
// complex_op_sub.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
double pi = 3.14159265359;
// Example of the first member function
// type complex<double> minus type complex<double>
complex <double> cl1 ( 3.0, 4.0 );
complex <double> cr1 ( 2.0, 5.0 );
complex <double> cs1 = cl1 - cr1;
cout << "The left-side complex number is cl1 = " << cl1 << endl;
cout << "The right-side complex number is cr1 = " << cr1 << endl;
cout << "Difference of two complex numbers is: cs1 = " << cs1 << endl;
double abscs1 = abs ( cs1 );
double argcs1 = arg ( cs1 );
cout << "The modulus of cs1 is: " << abscs1 << endl;
cout << "The argument of cs1 is: "<< argcs1 << " radians, which is "
<< argcs1 * 180 / pi << " degrees." << endl << endl;
// Example of the second member function
// type complex<double> minus type double
complex <double> cl2 ( 3.0, 4.0 );
double cr2 =5.0;
complex <double> cs2 = cl2 - cr2;
cout << "The left-side complex number is cl2 = " << cl2 << endl;
cout << "The right-side complex number is cr2 = " << cr2 << endl;
cout << "Difference of two complex numbers is: cs2 = " << cs2 << endl;
double abscs2 = abs ( cs2 );
double argcs2 = arg ( cs2 );
cout << "The modulus of cs2 is: " << abscs2 << endl;
cout << "The argument of cs2 is: "<< argcs2 << " radians, which is "
<< argcs2 * 180 / pi << " degrees." << endl << endl;
// Example of the third member function
// type double minus type complex<double>
double cl3 = 5.0;
complex <double> cr3 ( 3.0, 4.0 );
complex <double> cs3 = cl3 - cr3;
cout << "The left-side complex number is cl3 = " << cl3 << endl;
cout << "The right-side complex number is cr3 = " << cr3 << endl;
cout << "Difference of two complex numbers is: cs3 = " << cs3 << endl;
double abscs3 = abs ( cs3 );
double argcs3 = arg ( cs3 );
cout << "The modulus of cs3 is: " << abscs3 << endl;
cout << "The argument of cs3 is: "<< argcs3 << " radians, which is "
<< argcs3 * 180 / pi << " degrees." << endl << endl;
// Example of the fourth member function
// minus type complex<double>
complex <double> cr4 ( 3.0, 4.0 );
complex <double> cs4 = - cr4;
cout << "The right-side complex number is cr4 = " << cr4 << endl;
cout << "The result of the unary application of - to the right-side"
<< "\n complex number is: cs4 = " << cs4 << endl;
double abscs4 = abs ( cs4 );
double argcs4 = arg ( cs4 );
cout << "The modulus of cs4 is: " << abscs4 << endl;
cout << "The argument of cs4 is: "<< argcs4 << " radians, which is "
<< argcs4 * 180 / pi << " degrees." << endl << endl;
}
The left-side complex number is cl1 = (3,4)
The right-side complex number is cr1 = (2,5)
Difference of two complex numbers is: cs1 = (1,-1)
The modulus of cs1 is: 1.41421
The argument of cs1 is: -0.785398 radians, which is -45 degrees.
The left-side complex number is cl2 = (3,4)
The right-side complex number is cr2 = 5
Difference of two complex numbers is: cs2 = (-2,4)
The modulus of cs2 is: 4.47214
The argument of cs2 is: 2.03444 radians, which is 116.565 degrees.
The left-side complex number is cl3 = 5
The right-side complex number is cr3 = (3,4)
Difference of two complex numbers is: cs3 = (2,-4)
The modulus of cs3 is: 4.47214
The argument of cs3 is: -1.10715 radians, which is -63.4349 degrees.
The right-side complex number is cr4 = (3,4)
The result of the unary application of - to the right-side
complex number is: cs4 = (-3,-4)
The modulus of cs4 is: 5
The argument of cs4 is: -2.2143 radians, which is -126.87 degrees.
operator/
2 つの複素数を除算します。その一方または両方が実数部と虚数部の型のサブセットに属している場合があります。
template <class Type>
complex<Type> operator*(
const complex<Type>& left,
const complex<Type>& right);
template <class Type>
complex<Type> operator*(
const complex<Type>& left,
const Type& right);
template <class Type>
complex<Type> operator*(
const Type& left,
const complex<Type>& right);
パラメーター
left
複素数、または / 演算における分母で除算される分子である複素数のパラメーター型の数値。
right
複素数、または / 演算における分子を除算する場合に使用される分母である複素数のパラメーター型の数値。
戻り値
パラメーター入力で指定された値の分母で分子を除算した結果の複素数。
解説
データを特定の形式に変換せずに単純な算術演算を実行できるようにするために、演算はオーバーロードされます。
例
// complex_op_div.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
double pi = 3.14159265359;
// Example of the first member function
// type complex<double> divided by type complex<double>
complex <double> cl1 ( polar ( 3.0, pi / 6 ) );
complex <double> cr1 ( polar ( 2.0, pi / 3 ) );
complex <double> cs1 = cl1 / cr1;
cout << "The left-side complex number is cl1 = " << cl1 << endl;
cout << "The right-side complex number is cr1 = " << cr1 << endl;
cout << "The quotient of the two complex numbers is: cs1 = cl1 /cr1 = "
<< cs1 << endl;
double abscs1 = abs ( cs1 );
double argcs1 = arg ( cs1 );
cout << "The modulus of cs1 is: " << abscs1 << endl;
cout << "The argument of cs1 is: "<< argcs1 << " radians, which is "
<< argcs1 * 180 / pi << " degrees." << endl << endl;
// example of the second member function
// type complex<double> divided by type double
complex <double> cl2 ( polar (3.0, pi / 6 ) );
double cr2 =5;
complex <double> cs2 = cl2 / cr2;
cout << "The left-side complex number is cl2 = " << cl2 << endl;
cout << "The right-side complex number is cr2 = " << cr2 << endl;
cout << "The quotient of the two complex numbers is: cs2 = cl2 /cr2 = "
<< cs2 << endl;
double abscs2 = abs ( cs2 );
double argcs2 = arg ( cs2 );
cout << "The modulus of cs2 is: " << abscs2 << endl;
cout << "The argument of cs2 is: "<< argcs2 << " radians, which is "
<< argcs2 * 180 / pi << " degrees." << endl << endl;
// Example of the third member function
// type double divided by type complex<double>
double cl3 = 5;
complex <double> cr3 ( polar ( 3.0, pi / 6 ) );
complex <double> cs3 = cl3 / cr3;
cout << "The left-side complex number is cl3 = " << cl3 << endl;
cout << "The right-side complex number is cr3 = " << cr3 << endl;
cout << "The quotient of the two complex numbers is: cs3 = cl3 /cr2 = "
<< cs3 << endl;
double abscs3 = abs ( cs3 );
double argcs3 = arg ( cs3 );
cout << "The modulus of cs3 is: " << abscs3 << endl;
cout << "The argument of cs3 is: "<< argcs3 << " radians, which is "
<< argcs3 * 180 / pi << " degrees." << endl << endl;
}
The left-side complex number is cl1 = (2.59808,1.5)
The right-side complex number is cr1 = (1,1.73205)
The quotient of the two complex numbers is: cs1 = cl1 /cr1 = (1.29904,-0.75)
The modulus of cs1 is: 1.5
The argument of cs1 is: -0.523599 radians, which is -30 degrees.
The left-side complex number is cl2 = (2.59808,1.5)
The right-side complex number is cr2 = 5
The quotient of the two complex numbers is: cs2 = cl2 /cr2 = (0.519615,0.3)
The modulus of cs2 is: 0.6
The argument of cs2 is: 0.523599 radians, which is 30 degrees.
The left-side complex number is cl3 = 5
The right-side complex number is cr3 = (2.59808,1.5)
The quotient of the two complex numbers is: cs3 = cl3 /cr2 = (1.44338,-0.833333)
The modulus of cs3 is: 1.66667
The argument of cs3 is: -0.523599 radians, which is -30 degrees.
operator<<
出力ストリームに指定された複素数を挿入します。
template <class Type, class Elem, class Traits>
basic_ostream<Elem, Traits>& operator<<(
basic_ostream<Elem, Traits>& Ostr,
const complex<Type>& right);
パラメーター
Ostr
複素数が入力される出力ストリーム。
right
出力ストリームに入力される複素数。
戻り値
指定された複素数の値は、デカルト形式 (実数部, 虚数部) で Ostr に記述されます。
解説
出力ストリームはオーバーロードされるため、どの形式の複素数も受け入れられ、その既定の出力形式はデカルト形式となります。
例
// complex_op_insert.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
double pi = 3.14159265359;
complex <double> c1 ( 3.0, 4.0 );
cout << "Complex number c1 = " << c1 << endl;
complex <double> c2 ( polar ( 2.0, pi / 6 ) );
cout << "Complex number c2 = " << c2 << endl;
// To display in polar form
double absc2 = abs ( c2 );
double argc2 = arg ( c2 );
cout << "The modulus of c2 is: " << absc2 << endl;
cout << "The argument of c2 is: "<< argc2 << " radians, which is "
<< argc2 * 180 / pi << " degrees." << endl << endl;
}
Complex number c1 = (3,4)
Complex number c2 = (1.73205,1)
The modulus of c2 is: 2
The argument of c2 is: 0.523599 radians, which is 30 degrees.
operator==
2 つの複素数の間の同等性をテストします。その一方または両方が実数部と虚数部の型のサブセットに属している場合があります。
template <class Type>
bool operator==(
const complex<Type>& left,
const complex<Type>& right);
template <class Type>
bool operator==(
const complex<Type>& left,
const Type& right);
template <class Type>
bool operator==(
const Type& left,
const complex<Type>& right);
パラメーター
left
非等値をテストする複素数またはそのパラメーター型のオブジェクト。
right
非等値をテストする複素数またはそのパラメーター型のオブジェクト。
戻り値
数値が等しい場合は true、数値が等しくない場合は false。
解説
複素数が等しいのは、その実数部が等しく、かつその虚数部も等しい場合だけです。 それ以外の場合は等しくありません。
データを特定の形式に変換せずに比較テストを実行できるようにするために、操作はオーバーロードされます。
例
// complex_op_EQ.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
double pi = 3.14159265359;
// Example of the first member function
// type complex<double> compared with type complex<double>
complex <double> cl1 ( polar ( 3.0, pi / 6 ) );
complex <double> cr1a ( polar ( 3.0, pi /6 ) );
complex <double> cr1b ( polar ( 2.0, pi / 3 ) );
cout << "The left-side complex number is cl1 = " << cl1 << endl;
cout << "The 1st right-side complex number is cr1a = " << cr1a << endl;
cout << "The 2nd right-side complex number is cr1b = " << cr1b << endl;
if ( cl1 == cr1a )
cout << "The complex numbers cl1 & cr1a are equal." << endl;
else
cout << "The complex numbers cl1 & cr1a are not equal." << endl;
if ( cl1 == cr1b )
cout << "The complex numbers cl1 & cr1b are equal." << endl;
else
cout << "The complex numbers cl1 & cr1b are not equal." << endl;
cout << endl;
// Example of the second member function
// type complex<int> compared with type int
complex <int> cl2a ( 3, 4 );
complex <int> cl2b ( 5,0 );
int cr2a =3;
int cr2b =5;
cout << "The 1st left-side complex number is cl2a = " << cl2a << endl;
cout << "The 1st right-side complex number is cr2a = " << cr2a << endl;
if ( cl2a == cr2a )
cout << "The complex numbers cl2a & cr2a are equal." << endl;
else
cout << "The complex numbers cl2a & cr2a are not equal." << endl;
cout << "The 2nd left-side complex number is cl2b = " << cl2b << endl;
cout << "The 2nd right-side complex number is cr2b = " << cr2b << endl;
if ( cl2b == cr2b )
cout << "The complex numbers cl2b & cr2b are equal." << endl;
else
cout << "The complex numbers cl2b & cr2b are not equal." << endl;
cout << endl;
// Example of the third member function
// type double compared with type complex<double>
double cl3a =3;
double cl3b =5;
complex <double> cr3a (3, 4 );
complex <double> cr3b (5,0 );
cout << "The 1st left-side complex number is cl3a = " << cl3a << endl;
cout << "The 1st right-side complex number is cr3a = " << cr3a << endl;
if ( cl3a == cr3a )
cout << "The complex numbers cl3a & cr3a are equal." << endl;
else
cout << "The complex numbers cl3a & cr3a are not equal." << endl;
cout << "The 2nd left-side complex number is cl3b = " << cl3b << endl;
cout << "The 2nd right-side complex number is cr3b = " << cr3b << endl;
if ( cl3b == cr3b )
cout << "The complex numbers cl3b & cr3b are equal." << endl;
else
cout << "The complex numbers cl3b & cr3b are not equal." << endl;
cout << endl;
}
The left-side complex number is cl1 = (2.59808,1.5)
The 1st right-side complex number is cr1a = (2.59808,1.5)
The 2nd right-side complex number is cr1b = (1,1.73205)
The complex numbers cl1 & cr1a are equal.
The complex numbers cl1 & cr1b are not equal.
The 1st left-side complex number is cl2a = (3,4)
The 1st right-side complex number is cr2a = 3
The complex numbers cl2a & cr2a are not equal.
The 2nd left-side complex number is cl2b = (5,0)
The 2nd right-side complex number is cr2b = 5
The complex numbers cl2b & cr2b are equal.
The 1st left-side complex number is cl3a = 3
The 1st right-side complex number is cr3a = (3,4)
The complex numbers cl3a & cr3a are not equal.
The 2nd left-side complex number is cl3b = 5
The 2nd right-side complex number is cr3b = (5,0)
The complex numbers cl3b & cr3b are equal.
operator>>
入力ストリームから複素数の値を抽出します。
template <class Type, class Elem, class Traits>
basic_istream<Elem, Traits>& operator>>(
basic_istream<Elem, Traits>& Istr,
complex<Type>& right);
パラメーター
Istr
複素数が抽出される入力ストリーム。
right
入力ストリームから抽出される複素数。
戻り値
Istr から指定された複素数の値を読み取り、それを right に返します。
解説
有効な入力形式は次のとおりです。
(実数部, 虚数部)
(実数部)
実数部
例
// complex_op_extract.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
double pi = 3.14159265359;
complex <double> c2;
cout << "Input a complex number ( try: 2.0 ): ";
cin >> c2;
cout << c2 << endl;
}
Input a complex number ( try: 2.0 ): 2.0
2.0