C++，我做錯了什麼？

Question

我想要問10歲的學生的用戶，如果他們輸入小於0或超過18的任何東西，我希望它將該值更改爲0.

我做錯了什麼？

#include <iostream> 
using namespace std; 
int main() 
    int age [10]; 
    int TotalAge, AverageAge; 

    for (int i = 0; i < 10; i++) 
    { 
    cout << "please enter the age of students:"; 
    cin >> age[i]; 

    if age[i] < 0 || age[i] > 
    cout << "An error was detected in your input, invalid age"; // print 
    age[i] = 0; 
    TotalAge += age[i]; // total age is the sum of age 
    AverageAge = TotalAge/10; 
    cout << "Average age of class is: " << AverageAge << endl 
    } 

Answer 1

的

if (age[i] < 0 || age[i] > 18) 

，你應該把平均外循環。

//Initialize variables 
int TotalAge = 0, AverageAge = 0; 
for (int i = 0; i < 10; i++) 
    { 
    cout << "please enter the age of students:"; 
    cin >> age[i]; 

    if (age[i] < 0 || age[i] > 18) 
    { 
     cout << "An error was detected in your input, invalid age"; // print 
     age[i] = 0; 
    } 
    TotalAge += age[i]; // total age is the sum of age 
} 
//Calculate average outside 
AverageAge = TotalAge/10; 
cout << "Average age of class is: " << AverageAge << endl; 

Answer 2

，一切都在主函數必須在{}