Every time I try to run it Spits out zero help me !

include <cs50.h>

include <stdio.h>

int get_cents(void); int calculate_quarters(int cents); int calculate_dimes(int cents); int calculate_nickels(int cents); int calculate_pennies(int cents);

int main(void) { int cents = get_cents();

int quarters = calculate_quarters(cents);
cents = cents - quarters * 25;


int dimes = calculate_dimes(cents);
cents = cents - dimes * 10;


int nickels = calculate_nickels(cents);
cents = cents - nickels * 5;


int pennies = calculate_pennies(cents);
cents = cents - pennies * 1;


int coins = quarters   dimes   nickels   pennies;


printf("%i\n", coins);

}

int get_cents(void) { int cents; do { cents = get_int("Enter money "); } while (cents > 0); return cents; } int calculate_quarters(int cents) { int quarters = 0;

while (cents >= 25)
{
    quarters = 1   quarters;
    cents = cents - 25;
}

return quarters;

} int calculate_dimes(int cents) { int dimes = 0;

while (cents >= 10)
{
    dimes = 1   dimes;
    cents = cents - 10;
}

return dimes;

}

int calculate_nickels(int cents) { int nickels = 0;

while (cents >= 5)
{
    nickels= 1   nickels;
    cents = cents - 5;
}

return nickels;

}

int calculate_pennies(int cents) { int pennies = 0;

while (cents >= 1)
{
    pennies = 1   pennies;
    cents = cents - 1;
}

return pennies;

}