Program #24 (U3): Matrix Addition and Subtraction
Task: Read dimensions and two matrices of the same size. Compute A±B element-wise and print the result matrices (limit 50×50 to keep it simple).
#include <stdio.h>
int main(void) {
int r, c;
int A[50][50], B[50][50], C[50][50];
printf("Enter rows and cols (<=50): ");
if (scanf("%d %d", &r, &c) != 2 || r <= 0 || c <= 0 || r > 50 || c > 50) { printf("Invalid size.\n"); return 0; }
printf("Enter matrix A (%d x %d):\n", r, c);
for (int i = 0; i < r; ++i)
for (int j = 0; j < c; ++j) scanf("%d", &A[i][j]);
printf("Enter matrix B (%d x %d):\n", r, c);
for (int i = 0; i < r; ++i)
for (int j = 0; j < c; ++j) scanf("%d", &B[i][j]);
printf("A + B =\n");
for (int i = 0; i < r; ++i) {
for (int j = 0; j < c; ++j) { C[i][j] = A[i][j] + B[i][j]; printf("%d ", C[i][j]); }
printf("\n");
} printf("A - B =\n");
for (int i = 0; i < r; ++i) {
for (int j = 0; j < c; ++j) { C[i][j] = A[i][j] - B[i][j]; printf("%d ", C[i][j]); }
printf("\n");
} return 0;
}