Multi-Dimensional Arrays

#include <stdio.h>

#define M 3 /* number of rows */

#define N 4 /* number of columns */

main()

{

int a[M][N], i, j, sum = 0;

for (i = 0; i < M; ++i) /* fill the array */

for (j = 0; j < N; ++j)

a[i][j] = i + j;

for (i = 0; i < M; ++i) { /* print array values */

for (j = 0; j < N; ++j)

printf("a[%d][%d] = %d ", i, j, a[i][j]);

printf("\n"); } /* end print array values */

for (i = 0; i < M; ++i) /* sum the array */

for (j = 0; j < N; ++j)

sum += a[i][j];

printf("\nsum = %d\n\n", sum);

} /* end main */

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