Program to Interchange Diagonals of Matrix in C program

In this tutorial, we will be discussing a program to interchange the diagonals of a given matrix.

For this, we will be given with a square matrix of the order n*n. Our task is to interchange the elements in the two diagonals of the matrix and then return the new matrix.

Example

 Live Demo

#include<bits/stdc++.h> using namespace std; #define N 3 //interchanging the two diagonals void int_diag(int array[][N]){    for (int i = 0; i < N; ++i)       if (i != N / 2)    swap(array[i][i], array[i][N - i - 1]);    for (int i = 0; i < N; ++i){       for (int j = 0; j < N; ++j)       printf(" %d", array[i][j]);       printf("
");    } } int main(){    int array[N][N] = {24, 45, 64,    17, 21, 34,    75, 38, 98};    int_diag(array);    return 0; }

Output

64 45 24 17 21 34 98 38 75