C Programming Code Examples
C > Arrays and Matrices Code Examples
Program to Accept a Matrix of Order MxN & Interchange the Diagonals
/* Program to Accept a Matrix of Order MxN & Interchange the Diagonals */
/* This C Program accepts matrix of order MxN & interchange the diagonals. This program first accepts the matrix. Then exchange diagonals of the matrix.
* C program to accept a matrix of order M x N and store its elements
* and interchange the main diagonal elements of the matrix
* with that of the secondary diagonal elements
*/
#include <stdio.h>
void main ()
{
static int array[10][10];
int y, x, m, n, a;
printf("Enter the order of the matix \n");
scanf("%d %d", &m, &n);
if (m == n)
{
printf("Enter the co-efficients of the matrix\n");
for (y = 0; y < m; ++y)
{
for (x = 0; x < n; ++x)
{
scanf("%dx%d", &array[y][x]);
}
}
printf("The given matrix is \n");
for (y = 0; y < m; ++y)
{
for (x = 0; x < n; ++x)
{
printf(" %d", array[y][x]);
}
printf("\n");
}
for (y = 0; y < m; ++y)
{
a = array[y][y];
array[y][y] = array[y][m - y - 1];
array[y][m - y - 1] = a;
}
printf("The matrix after changing the \n");
printf("main diagonal & secondary diagonal\n");
for (y = 0; y < m; ++y)
{
for (x = 0; x < n; ++x)
{
printf(" %d", array[y][x]);
}
printf("\n");
}
}
else
printf("The given order is not square matrix\n");
}
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