PSET1, credit.c compiles just fine, runs just fine. But when I use check50 everything goes to hell. Would love fresh eyes to look at my code

Question

My code:

#include <stdio.h>
#include <cs50.h>

int main(void)
{
    long long i = 0;

    do
    {
    // read user input from stdin
    i = get_long_long("Enter credit card number: ");
    }
    while(i <= 0); //make sure number entered is positive int

    long long cc = i;
    int valueA = 0;
    int valueB = 0;

    //get every second number of credit card multiply it by two and add the values
    while(cc > 0)
    {
        cc /= 10;
        if(cc % 10 * 2 > 9)
        {
            valueA += (((cc % 10) * 2) - 10) + 1;
        }
        else
        {
            valueA += (cc % 10) * 2;
        }
        cc /= 10;
    }

    //add together the other numbers from the credit card
    cc = i;
    while(cc > 0)
    {
        valueB += cc % 10;
        cc /= 100;
    }

    cc = i;
    //get the leading 2 digits of the credit card
    while(cc > 99)
    {
        cc /= 10;
    }

    //determine if valid checksum, and if so, identify issuer
    if((valueA + valueB) % 10 == 0)
    {
        //credit card identification
        if(cc == 34 || cc == 37)
        {
            printf("AMEX\n");
        }
        else if(cc > 50 && cc < 56)
        {
            printf("MASTERCARD\n");
        }
        else if(cc > 39 && cc < 50)
        {
            printf("VISA\n");
        }

    }
    else //reject card
    {
        printf("INVALID\n");
    }

    return 0;
}

Answer 1

It was a careless error of uploading the wrong file! Thanks for the help guys.