C++ goto語句

C++ goto語句也稱為跳轉語句。 它用於將控制轉移到程式的其他部分。 它無條件跳轉到指定的標籤。

它可用於從深層巢狀迴圈或switch case標籤傳輸控制。

C++ Goto語句範例

下面來看看看C++中goto語句的簡單例子。

#include <iostream>  
using namespace std;  
int main()  
{  
ineligible:    
    cout<<"You are not eligible to vote!\n";    
    cout<<"Enter your age:\n";    
    int age;  
    cin>>age;  
    if (age < 18){    
        goto ineligible;    
    }    
    else    
    {    
        cout<<"You are eligible to vote!";     
    }
    return 0;
}

上面程式碼執行結果如下 -

You are not eligible to vote!
Enter your age:
16
You are not eligible to vote!
Enter your age:
7
You are not eligible to vote!
Enter your age:
22
You are eligible to vote!