numeric_limits::is_integer
測試,如果型別具有整數表示。
static const bool is_integer = false;
傳回值
true ,如果型別具有整數表示; false 。
備註
所有預先定義整數型別具有整數表示。
範例
// numeric_limits_is_integer.cpp
// compile with: /EHsc
#include <iostream>
#include <limits>
using namespace std;
int main( )
{
cout << "Whether float objects have an integral representation: "
<< numeric_limits<float>::is_integer
<< endl;
cout << "Whether double objects have an integral representation: "
<< numeric_limits<double>::is_integer
<< endl;
cout << "Whether int objects have an integral representation: "
<< numeric_limits<int>::is_integer
<< endl;
cout << "Whether unsigned char objects have an integral representation: "
<< numeric_limits<unsigned char>::is_integer
<< endl;
}
需求
標題: <。>
命名空間: std