如何在枚举中使用rand（）？

Question

你好，我开始学习C++，我不知道如何枚举工作那么好，我需要帮助，我知道如何让兰特（）与枚举

#include <iostream> 
 
#include <cstring> 
 
#include <string> 
 
#include <cstdlib> 
 

 
using namespace std; 
 

 
int main() 
 
{ 
 

 
    cout << "First part : Create an item. " << endl; 
 
    int choice; 
 

 
    int Fire = 25; 
 
    int Water = 23; 
 
    int Wind = 24; 
 
    int Earth = 20; 
 
    
 
    int WeaponNature = 0; 
 
    
 
    enum NatureWeapons { Fire, Water, Wind, Earth}; // enum here if its wrong pls let me know): 
 
    
 
    
 
    
 
    cout << "Enter the nature of weapon you want : " << endl; 
 
    cout << " 1 - Fire " << endl; 
 
    cout << " 2 - Water " << endl; 
 
    cout << " 3 - Wind " << endl; 
 
    cout << " 4 - Earth" << endl; 
 
    cin >> choice; 
 
    switch(choice) 
 
    { 
 
     case 1: 
 
     cout << "You picked fire." 
 
     cout << " Power : " << Fire << endl; 
 
     WeaponNature = Fire; 
 
     break; 
 
     
 
     case 2: 
 
     cout << "You picked water." << endl; 
 
     cout << " Power : " << Water << endl; 
 
     WeaponNature = Water; 
 
     break; 
 
     
 
     case 3: 
 
     cout << "You picked wind nature." << endl; 
 
     cout << " Power : " << Wind << endl; 
 
     WeaponNature = Wind; 
 
     break; 
 
     
 
     case 4: 
 
     cout << "You picked earth nature." << endl; 
 
     cout << " Power : " << Earth << endl; 
 
     WeaponNature = Earth; 
 
     break; 
 
     
 
     default: 
 
     cout << "Incorrect input. Your weapon will be : " << rand() // this is where i need help 
 
     
 
    } 
 
    
 

 

 
}

工作当默认值：在switch（）中运行时，我希望它使用rand（）选择随机性质，请任何帮助）：？

Answer 1

由于从http://www.cprogramming.com/tutorial/enum.html采取：

印刷枚举

你可能不知道发生了什么，当你打印出一个枚举：默认情况下，你会得到枚举的整数值。如果你想做一些比这更奇妙的事情，你必须专门处理它。

您将不得不创建另一个开关块，将随机整数转换为enum中的适当值。另外，还可以通过srand(time(NULL))

为您的随机数生成器初始化一个种子，并将rand值也分配给WeaponNature。