Thread: Array help.

I am new to C and am having trouble with arrays. The code below produces strange output specifically at a[4].

Code:

#include <stdio.h>


int main(void)
{
    int num;
    int i = 0;
    int factor = 2;
    int a[1024];

    printf("Enter a number: ");
    scanf("%d", &num);

    while (num != factor) {
        if (num % factor == 0) {
            num = num / factor;
            a[i] = factor;
            i++;
        }
        else {
            factor++;
            i++;
        }
    }

    a[i] = factor;
    int j = 0;

    while (j <= i) {
        printf("%d\n", a[j]);
        j++;
    }
    return 0;
}

Output

Code:

Enter a number: 144
2
2
2
2
32767
3
3

Thanks in advance for your help.

You shouldn't be incrementing i in your else clause (since you don't store an element there).

That did it thanks!