Program love calculator

/*C program to design love calculator.*/

 

#include <stdio.h>

#include <string.h>

#include <ctype.h>

 

//function will return sum of all digits

int sumOfDigits(int num)

{

    int sum=0;

    while(num>0)

    {

        sum+=(num%10);

        num/=10;

    }

    return sum;

}

 

int main()

{

 

    char yName[40], pName[40];

    int sum, sum1, i, choice;

    float perc=0;

 

    do

    {

        printf("Enter your name: ");

        fflush(stdin);

        gets(yName);

 

        printf("Enter your partner's name: ");

        fflush(stdin);

        gets(pName);

 

        sum=0;

        for(i=0;i<(strlen(yName));i++)

        {

            sum+=tolower(yName[i]);

        }

 

        sum1=0;

        for(i=0;i<(strlen(yName));i++)

        {

            sum1+=tolower(pName[i]);

        }

 

        perc=(sumOfDigits(sum)+sumOfDigits(sum1))+40;

        if(perc>100) perc=100;

 

        printf("Your love percentage is: %.02f\n\n",perc);

 

        printf("Want to calculate with some one else (0 to exit, 1 to continue) ???: ");

        scanf("%d",&choice);

 

    }while(choice!=0);

 

    return 0;