To check Whether the given number is Perfect number or Not

Source Code:

#include <stdio.h>
#include<stdlib.h>
int main(int argc, char const*argv[])
{
    int i, n;
    n=atoi(argv[1]);
    for(i = 0; i <= n; i++)
    {
        if (n == i * i)
        {
            printf("YES");
            return 0;
        }
    }
    printf("NO");
    return 0;
}

Output:

D:\D INSTALL\TDM-GCC-32\Programs>Perfect 4
YES
D:\D INSTALL\TDM-GCC-32\Programs>Perfect 5
NO
D:\D INSTALL\TDM-GCC-32\Programs>Perfect 100
YES

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Thanks and regards,

Tech Bird