Whats wrong with this?
#include <iostream>
using namespace std;

double get_coins();
double get_coins_value();

int main()
{
const double price = 3.50;
double total_so_far = 0.0;

do
{
total_so_far += get_coins();
}
while(total_so_far < price);

if (total_so_far > price)
{
cout << "Your change is " << total_so_far - price << endl;
}

return 0;
}
double get_coins()
{
int coins;
double total = 0.0;

cout << "Enter 1 for dollars "
<< "Enter 2 for quarters "
<< "Enter 3 for dimes "
<< "Enter 4 for nickels ";

cin >> coins;

total += get_coins_value();

while(coins != 1 && coins != 2 && coins != 3 && coins != 4);
{
return (total);
}

}

double get_coins_value(int coins)
{
double coin_value;
switch(coins)
{
case 1:
coin_value = 1.00;
break;
case 2:
coin_value = 0.25;
break;
case 3:
coin_value = .10;
break;
case 4:
coin_value = .05;
break;
}
return(coin_value);
}
What makes you think there is something wrong with your code?
1) your get_coins_value prototype is wrong, should be: `double get_coins_value(int);`
2) `total += get_coins_value();` should be `total += get_coins_value(coins);`
I cant understand why this loop

 ``1234`` ``````while(coins != 1 && coins != 2 && coins != 3 && coins != 4); { return (total); }``````
You missing semicolon at the end of the 1st line. It can be written as:
 ``1234`` ``````while(coins != 1 && coins != 2 && coins != 3 && coins != 4) ; //or while(coins != 1 && coins != 2 && coins != 3 && coins != 4) { };``````

This loop will be infinite (hang program) if you enter anything aside from 1, 2, 3 or 4.
Just delete that line. It makes no sense.
Last edited on
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