爲什麼我的C++標記循環在輸入標記值後繼續？

Question

當我輸入字符串「NOMORE」時，它會繼續下一行，詢問車速。它只在完成for循環時停止循環。如何在「NOMORE」輸入時立即停止？謝謝你的幫助。我真的很感激它。

cout << "Enter a license plate number --> "; 
cin >> plate; 
if (plate == "NOMORE") break; // add this 
cout << "Enter current vehicle's speed --> "; 
... 

在for循環的條件僅之間檢查：很遺憾浪費了，如果我沒:(

#include <iostream> 
#include <string> 
#include <iomanip> 

using namespace std; 

int main() 
{ 
    string plate; 
    int totalCount; 
    int ticketCount = 0; 
    double speed; 
    double base = 150; 
    double limit; 
    double ticket; 
    double overspeed; 

    for (totalCount = 0; plate != "NOMORE"; totalCount++) 
    { 
     cout << "Enter a license plate number --> "; 
     cin >> plate; 
     cout << "Enter current vehicle's speed --> "; 
     cin >> speed; 
     cout << "Enter speed limit in the zone --> "; 
     cin >> limit; 

     overspeed = speed - limit; 

     if (overspeed >= 5 && overspeed <= 20) 
     { 
      ticket = base + 5 * overspeed; 
      cout << "A ticket of " << setprecision(2) << fixed << ticket << " is issued to " << plate << "\n\n"; 

      ticketCount++; 
     } 
     else if (overspeed > 20 && overspeed <= 50) 
     { 
      ticket = base + 10 * overspeed; 
      cout << "A ticket of " << setprecision(2) << fixed << ticket << " is issued to " << plate << "\n\n"; 

      ticketCount++; 
     } 
     else if (overspeed > 50) 
     { 
      ticket = base + 1000 + (10 * overspeed); 
      cout << "A ticket of " << setprecision(2) << fixed << ticket << " is issued to " << plate << "\n\n"; 

      ticketCount++; 
     } 
     else 
      cout << "No ticket is issued to " << plate << ".\n\n"; 
    } 

    cout << ticketCount << " out of " << totalCount << " times\n"; 

    return 0; 
} 

Answer 1

你的時間作爲@IgorTandetnik評論，你得到的用戶輸入之後添加此權。迭代，每個語句後沒有該流程圖總結了他們的言行舉止：