範例

const int ERROR = -1;

int something(){
return ERROR;
}

int main(int argc, char* argv[])
{
something();
return 0;
}

解決方案

如果儲存或檢查回覆值有效，請儲存或檢查。

const int ERROR = -1;

int something(){
return ERROR;
}

int main(int argc, char* argv[])
{
int check = something();

if(check == ERROR){
cout << "Error occured";
}

return 0;
}