Tracking down strange error
I'm trying to do some C++ exercises, but I'm running into a error on build, which doesn't just jump out at me. What am I missing? I'm just getting back to C++ from C# et al after having done it years ago.
[ERROR] syntax error : 'return' [/ERROR]
#include <iostream>
using namespace std;
/* Pre-compiler directives / macros */
#define isValidDrinkChoice(Choice,MaxNumDrinks) ((Choice < MaxNumDrinks) && (Choice > 0))
/* Primary Entry Point for Executable */
int main(const int & argc, char * argv[]){
const int MaxNumDrinks = 4;
char ** Drinks;
Drinks = new char* [MaxNumDrinks];
Drinks[0] = "Soda";
Drinks[1] = "Water";
Drinks[2] = "Coffee";
Drinks[3] = "Tea";
Drinks[4] = "Perrier Sparkling Water";
int Choice = -1;
do while(!isValidDrinkChoice(Choice, MaxNumDrinks)) {
cout << "Please select your favorite drink\r\n\r开发者_StackOverflow中文版\n" << endl;
for (int x = 0; x < MaxNumDrinks; x++) cout << "\t" << Drinks[x] << endl;
cin >> Choice;
if (isValidDrinkChoice(Choice, MaxNumDrinks)) cout << "\r\n\r\n" << "You chose " << *Drinks[Choice] << endl;
}
return 0;
}
I don't think there's a do while
like that in C++. It's do { ... } while (expression);
. Or while (expression) { ... }
.
The Corrected code sample its the while loop that needs replacement
#include <iostream>
namespace {
bool isValidDrinkChoice(int Choice, int MaxNumDrinks) {
return ((Choice < MaxNumDrinks) && (Choice >= 0));
}
}
/* Primary Entry Point for Executable */
int main() {
using namespace std;
const char *Drinks[] = {
"Soda", "Water", "Coffee", "Tea", "Perrier Sparkling Water" };
const int MaxNumDrinks = sizeof(Drinks) / sizeof(*Drinks);
int Choice = -1;
do {
cout << "Please select your favorite drink\r\n\r\n" << endl;
for (int i = 0; i < MaxNumDrinks; i++)
cout << Drinks[i] << endl;
cin >> Choice;
if (isValidDrinkChoice(Choice, MaxNumDrinks))
cout << "\r\n\r\n" << "You chose " << Drinks[Choice] << endl;
} while(!isValidDrinkChoice(Choice, MaxNumDrinks) && cin) ;
return cin.good() ? 0 : 1;
}
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