c++ - vector C++ 的输入验证

Question

我的 do-while 循环的输入验证有问题。我的 do-while 循环只验证所有其他输入

这是一个例子:

Please Enter Grade 1: 101 (It does not accept input) 

Invalid Rage. Please Enter Range 0-100.
Please Enter Grade 1: 101 (It accapts this input)

Please Enter Grade 2: 101 (It does not accept input) 

Invalid Rage. Please Enter Range 0-100.
Please Enter Grade 2: 101 (It accapts this input)

这是我的代码:

for(vector<double>::size_type i = 0; i < 15; i++)
  {
    do
    {
         cout << "Please Enter Grade "<< i + 1 <<": " << flush;
            cin >> gradesVector[i];
        }
        while(gradesVector[i] < 0.0 && gradesVector[i] > 100.0);
        { 
            cout << "Invalid Rage. Please Enter Range 0-100:\n";
                cout << "Please Enter Grade "<< i + 1 <<": " << flush;
                    cin >> gradesVector[i];
         }   
}

Answer 1

试试这个:

int main() {
   vector<double> gradesVector(15);
   for(vector<double>::size_type i = 0; i < 15; i++) {
       do {
            cout << "Please Enter Grade "<< i + 1 <<": " << flush;
            cin >> gradesVector[i];
       } while(gradesVector[i] < 0.0 || gradesVector[i] > 100.0);
   }
}