What's wrong with this program?

Code:

#include <stdio.h>
#include <conio.h>

main()
{
    int p,N[100] = {0},d,c,E;
    printf("Input a number: ");
    scanf("%d",&p);
    for(d=1,c=0;d<p;d++)
    {
        if(p%d==0)
        {
            N[c]=d;
            c++;
        }
    }
    c=0;
    while(N[c]!=0)
    {
        E=E+N[c];
    }
    printf("\n%d",E);
}

So I have made a program for computing the sum of the factors of the input but the problem is that it doesn't print the sum. I can't see the error in this code so can someone indicate the problem. Thanks.

Code:

#include <stdio.h>

 
main()
{
    int p,N[100] = {0},d,c,E=0;
    printf("Input a number: ");
    scanf("%d",&p);
    for(d=1,c=0;d<=p;d++)
    {
        if(p%d==0)
        {
            N[c]=d;
            c++;
        }
    }
    c=0;
    while(N[c]!=0)
    {
        E=E+N[c];
        c++; // see here since you are not incrementing c in your code, the while loop becomes an infinite  one.
    }
    printf("\n%d",E);
}

its something common for beginners. you take care of the important part(to find the sum or the product or whatever but forget to do the smaller steps.) increment the index c in the while loop until there is a zero..hope it helps!!

but im not getting the right answer when i input 20 the answer should be 1+2+5+10+20=38.
a number is a factor of itself you missed that point there..
by the way initialize E to zero...

When I tried what you told me. The sum is something unexpected. When I enter "32", it prints a unexpected number. But thanks for the answer, I didn't saw that error. But still more problem.

Originally Posted by KiRa11Love

When I tried what you told me. The sum is something unexpected. When I enter "32", it prints a unexpected number. But thanks for the answer, I didn't saw that error. But still more problem.

initiaize E to zero(see line 6 in the code)...otherwise some garbage value will be stored there..thats your problem i guess..my code works fine for 32..it gives 63...hit like if it works

hint: if you input 20, the sum of factors includes 20 also...are you checking if a number is a factor of itself?? just see upto what number you are checking for factors!

It worked!... Thanks Man... Now I can continue on my life. XD

This looks like C, not C++. Mix up?