C program to print diagonal matrix

C program to print diagonal matrix


Output:

Enter the 3 x 3 matrix to print its diagonal matrix
1 2 3
4 5 6
7 8 9
The diagonal matrix for entered matrix is:
1 0 0
0 5 0
0 0 9

Implementation:

#include <stdio.h> #define r 3 //change the row size here #define c 3 //change the column size here int main(void) { int a[r][c]; int i,j; printf("Enter the %d x %d matrix to print its diagonal matrix\n",r,c); for(i=0;i<r;i++) { for(j=0;j<c;j++) { scanf("%d",&a[i][j]); } } /* printing diagonal matrix for entered matrix */ printf("The diagonal matrix for entered matrix is:\n"); for(i=0;i<r;i++) { for(j=0;j<c;j++) { if(i==j) { printf("%d ",a[i][j]); } else { printf("0 "); } } printf("\n"); } return 0; }