#include <stdio.h>
#define COLS 6
void print_matrix(int matrix[][COLS], int rows, int cols) {
int i, j;
for (i = 0; i < rows; i++) {
for (j = 0; j < cols; j++) {
printf("%5i", matrix[i][j]);
}
printf("\n");
}
}
int matrix_row_include_number(int matrix[][COLS], int row, int cols, int number) {
for (int j = 0; j < cols; j++) {
if (matrix[row][j] == number) {
return 1;
}
}
return 0;
}
void set_matrix_row_to_zero(int matrix[][COLS], int row, int cols) {
for (int j = 0; j < cols; j++) {
matrix[row][j] = 0;
}
}
int main() {
int matrix[][COLS] = {
{ 4, 7, 9, 18, 29, 0 },
{ 1, 9, 18, 99, 4, 3 },
{ 9, 17, 89, 0, 7, 5 },
{ 19, 49, 6, 1, 9, 8 },
{ 29, 4, 7, 9, 18, 6 } };
int row = 2;
if (matrix_row_include_number(matrix, row, COLS, 0)) {
set_matrix_row_to_zero(matrix, row, COLS);
}
int rows = sizeof(matrix) / sizeof(matrix[0]);
print_matrix(matrix, rows, COLS);
return 0;
}
/*
run:
4 7 9 18 29 0
1 9 18 99 4 3
0 0 0 0 0 0
19 49 6 1 9 8
29 4 7 9 18 6
*/