C Exercises: Accept two matrices and check whether they are equal
C Array: Exercise-30 with Solution
Write a program in C to accept two matrices and check whether they are equal.
Visual Presentation:

Sample Solution:
C Code:
#include <stdio.h>
#include <stdlib.h>
int main() {
int arr1[50][50], brr1[50][50];
int i, j, r1, c1, r2, c2, flag = 1;
// Display the purpose of the program
printf("\n\nAccept two matrices and check whether they are equal :\n");
printf("-----------------------------------------------------------\n");
// Input Rows and Columns of the 1st matrix
printf("Input Rows and Columns of the 1st matrix :");
scanf("%d %d", &r1, &c1);
// Input Rows and Columns of the 2nd matrix
printf("Input Rows and Columns of the 2nd matrix :");
scanf("%d %d", &r2, &c2);
// Input elements into the first matrix
printf("Input elements in the first matrix :\n");
for(i = 0; i < r1; i++) {
for(j = 0; j < c1; j++) {
printf("element - [%d],[%d] : ", i, j);
scanf("%d", &arr1[i][j]);
}
}
// Input elements into the second matrix
printf("Input elements in the second matrix :\n");
for(i = 0; i < r2; i++) {
for(j = 0; j < c2; j++) {
printf("element - [%d],[%d] : ", i, j);
scanf("%d", &brr1[i][j]);
}
}
// Display the first matrix
printf("The first matrix is :\n");
for(i = 0; i < r1; i++) {
for(j = 0; j < c1; j++) {
printf("% 4d", arr1[i][j]);
}
printf("\n");
}
// Display the second matrix
printf("The second matrix is :\n");
for(i = 0; i < r2; i++) {
for(j = 0; j < c2; j++) {
printf("% 4d", brr1[i][j]);
}
printf("\n");
}
// Comparing two matrices for equality
if(r1 == r2 && c1 == c2) {
printf("The Matrices can be compared : \n");
for(i = 0; i < r1; i++) {
for(j = 0; j < c2; j++) {
if(arr1[i][j] != brr1[i][j]) {
flag = 0;
break;
}
}
}
} else {
printf("The Matrices Cannot be compared :\n");
exit(1);
}
// Display whether matrices are equal or not
if(flag == 1)
printf("Two matrices are equal.\n\n");
else
printf("But, two matrices are not equal.\n\n");
return 0;
}
Sample Output:
Accept two matrices and check whether they are equal : ----------------------------------------------------------- Input Rows and Columns of the 1st matrix :2 2 Input Rows and Columns of the 2nd matrix :2 2 Input elements in the first matrix : element - [0],[0] : 1 element - [0],[1] : 2 element - [1],[0] : 3 element - [1],[1] : 4 Input elements in the second matrix : element - [0],[0] : 1 element - [0],[1] : 2 element - [1],[0] : 3 element - [1],[1] : 4 The first matrix is : 1 2 3 4 The second matrix is : 1 2 3 4 The Matrices can be compared : Two matrices are equal.
Flowchart:

C Programming Code Editor:
Previous: Write a program in C to accept a matrix and determine whether it is a sparse matrix.
Next: Write a program in C to check whether a given matrix is an identity matrix.
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