C :: Using Functions To Convert Change Into Dollars

I know this is pretty basic script the problem I have is that I have to use functions for each calculation. The problem I face is that when the user types in the amount of quarters, dimes, nickels, and pennies when a function tries to add them together it displays a huge number instead of the right number.

Here is my code:

#include <stdio.h>
void insert_money(int p, int n, int d, int q, int total){
printf("How much of each coin do you want to insert:
");
printf("Quarters: ");
scanf("%d", &q);

[Code] ....