program3_5.c

// write a program which accpet number from useranf return difference
// between summation of all factors and non factors

#include<stdio.h>

int FactDiff(int iNo)
{
     int iCnt  = 0;
     int iSumFact = 0;
     int iSumNonFact = 0;
     int iDiff = 0;

    for (iCnt = 1; iCnt < iNo; iCnt++)
    {
        if((iNo % iCnt) == 0)
        {
            iSumFact = iSumFact + iCnt;   
        }
        else
        {
            iSumNonFact = iSumNonFact + iCnt;
        }
    }
        iDiff = iSumFact - iSumNonFact;
    
    return iDiff;

}

int main()
{
    int iValue = 0;
    int iRet = 0;

    printf("enter number ");
    scanf("%d",&iValue);
    iRet = FactDiff(iValue);

    printf("%d",iRet);
    return 0;
}