In main function of selection sorting of array it is showing error that no matching function found

Question

include <iostream>

using namespace std;
class sort{
public:
int size;
sort()
{
cout<<"Enter the size of array for sorting";
cin>>size;
}
};
template <class T>
class Selection:public sort
{
public:
int *Array=new int[size];
void swap(int *a,int *b);
void printArray(int *Array[], int size);
void selectionSort(int *Array[], int size);
Selection()
{
cout<<"Enter the array for sorting";
for(int i=0;i<size;i++)
{
cin>>Array[i];
}

 }

};
template <class T>
void Selection<T>::swap(int *a, int *b) // function to swap the the position of two elements
{
int temp = *a;
*a = *b;
*b = temp;
}
template <class T>
void Selection<T>::printArray(int *Array[], int size) // function to print an array
{
for (int i = 0; i < size; i++)
{
cout << Array[i] << " ";
}
cout << endl;
}
template <class T>
void Selection<T>::selectionSort(int *Array[], int size) {

for (int step = 0; step < size - 1; step++) {
int min = step;
for (int i = step + 1; i < size; i++)
{
if (Array[i] < Array[min]) // To sort in descending order, change > to < in this line.
min = i; // Select the minimum element in each loop.
}
swap(&Array[min], &Array[step]); // put minimum value at the correct position
printArray(Array,size) ;
}
}
int main() // driver code
{
Selection<int>l;
l.selectionSort(l.Array,l.size);
cout << "Sorted array in Acsending Order:\n";
l.printArray(l.Array,l.size);
}

Answer 1

Hi @Stuti Thakur ,

For point-related knowledge, you need to review it again. The array you are sorting is an integer one-dimensional array, so the function parameter should also be an array of the same type. I modified the code you provided, now the code can realize the sorting function, you could refer to it.

By the way , you could use this function when uploading the code, which will help everyone understand your code more easily.

#include <iostream>  
using namespace std;  
class sort {  
public:  
	int size;  
	sort()  
	{  
		cout << "Enter the size of array for sorting";  
		cin >> size;  
	}  
};  
template <class T>  
class Selection :public sort  
{  
public:  
	int* Array = new int[size];  
	void swap(int* a, int* b);  
	void printArray(int* Array, int size);  
	void selectionSort(int* Array, int size);  
	Selection()  
	{  
		cout << "Enter the array for sorting";  
		for (int i = 0; i < size; i++)  
		{  
			cin >> Array[i];  
		}  
	}  
};  
template <class T>  
void Selection<T>::swap(int* a, int* b) // function to swap the the position of two elements  
{  
	int temp = *a;  
	*a = *b;  
	*b = temp;  
}  
template <class T>  
void Selection<T>::printArray(int* Array, int size) // function to print an array  
{  
	for (int i = 0; i < size; i++)  
	{  
		cout << Array[i] << " ";  
	}  
	cout << endl;  
}  
template <class T>  
void Selection<T>::selectionSort(int* Array, int size) {  
  
	for (int step = 0; step < size - 1; step++) {  
		int min = step;  
		for (int i = step + 1; i < size; i++)  
		{  
			if (Array[i] < Array[min]) // To sort in descending order, change > to < in this line.  
				min = i; // Select the minimum element in each loop.  
		}  
		swap(&Array[min], &Array[step]); // put minimum value at the correct position  
	}  
}  
int main() // driver code  
{  
	Selection<int>l;  
	l.selectionSort(l.Array, l.size);  
	cout << "Sorted array in Acsending Order:\n";  
	l.printArray(l.Array, l.size);  
}  

Best regards,

Elya

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