How to find the number of positive elements in each row?

Question

WordPress

Given a 3 by 3 matrix filled with random numbers.

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define M 3
#define N 3
int main() {
    int a[N][M], i, j;
    srand(time(NULL));
    for (i=0; i<N; i++) {
        for (j=0; j<M; j++) {
            a[i][j] = rand() % 20 - 10;
            printf("%4d", a[i][j]);
        }
        printf("\n");
    }
}

How to find and output the number of positive elements in each row?

Answer 1

Loop through each line: create a counter, check each element of the line, if positive, increase the counter by 1. After passing through each line, display the value of the counter.