#include #include int main(void) { double b[][3] = {{1.0, 2.0, 3.0}, {4.0, 5.0, 6.0}}, sum1 = 0.0, sum2 = 0.0; int i, j, k; b[1][2] += 0.1; for (i = 0; i < 2; i++) /* Sum of elements */ for (j = 0; j < 3; j++){ printf("b[%d][%d] = %f\n", i, j, b[i][j]); sum1 += b[i][j]; } for (k = 0; k < 2 * 3; k++) /* An alternative summation */ sum2 += *(&b[0][0] + k); /* Same result */ printf("Sum1 = %f, sum2 = %f\n", sum1, sum2); /* Sum1 = 21.100000, sum2 = 21.100000 */ return 0; }