Rotate a 2-D matrix by 90° counter-clockwise

#include<iostream>
using namespace std;
int main()
{
    int n,A[100][100];
    cout<<"Enter the dimension of the square matrix:"<<endl;
    cin>>n;
    cout<<"Enter the elements:"<<endl;
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            cin>>A[i][j];
        }
    }
    for(int i=0;i<n/2;i++)
    {
        for(int j=i;j<n-1-i;j++)
        {
            int t=A[i][j];
            A[i][j]=A[j][n-1-i];
            A[j][n-1-i]=A[n-1-i][n-1-j];
            A[n-1-i][n-1-j]=A[n-1-j][i];
            A[n-1-j][i]=t;
        }
    }
    cout<<"The counter-clockwise rotated matrix is:"<<endl;
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            cout<<A[i][j]<<" ";
        }
        cout<<endl;
    }
    return 0;
}
Output:
Enter the dimension of the square matrix: 4
Enter the elements:
1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
The counter-clockwise rotated matrix is:
1 2 3 4 
1 2 3 4 
1 2 3 4 
1 2 3 4