OJ Board

Hi everyone !
These might get usefull for I/O :
(Please check that it is correct, but I got AC using these)

long int read_amount(){
long int amount = 0;
string money;
cin >> money;

for (int iCar = 0; iCar < money.size(); ++iCar) {
char& caracter = money[iCar];
if (isdigit(caracter ...