我正在寫一個有點像算命先生的代碼,但我在switch語句中遇到了一些麻煩。執行代碼時會打印出相同的消息,並且不會像選擇它那樣隨機選擇一個!有人可以幫幫我嗎!謝謝! 繼承人我的代碼C++需要幫助,隨機開關語句
#include<iostream>
#include<time.h>
#include<stdlib.h>
using namespace std;
void printGreeting(); // function prototype
int main()
{
int choice;
printGreeting();
cout << "Would you like to see your fortune?" << endl;
cout << "Press 1 to see your fortune or 2 if you don't!" << endl;
cin >> choice;
if (choice == 1)
{
cout << "Great! Your fortune is: ";
// Function to generate random number
void rand1();
srand(time(NULL));
int MAX_NUM;
MAX_NUM = 5;
int random = rand() % MAX_NUM;
cout << random << endl;
int selection;
selection = 5;
switch (selection)
{
case 1:
cout << "Change can hurt, but it leads a path to something better!";
break;
case 2:
cout << "If you have something good in your life don't let it go!";
break;
case 3:
cout << "You're in for a treat today.";
break;
case 4:
cout << "Land is always on the mind of a flying bird";
break;
case 5:
cout << "A dream you have will come true";
break;
}
return 0;
}
else if (choice == 2)
{
cout << "Okay goodbye!" << endl;
}
}
// Prints greeting message
void printGreeting() // function header
{
cout << "Hello! Welcome to your fortune teller!" << endl; // function body
}
總是調試你的代碼。逐步瞭解'random'的值以及哪個case語句被調用?你會自己想出這個方法。 – FortyTwo
解決這些問題的正確工具是您的調試器。在*堆棧溢出問題之前,您應該逐行執行您的代碼。如需更多幫助,請閱讀[如何調試小程序(由Eric Lippert撰寫)](https://ericlippert.com/2014/03/05/how-to-debug-small-programs/)。至少,你應該[編輯]你的問題,以包含一個[Minimal,Complete,and Verifiable](http://stackoverflow.com/help/mcve)例子來重現你的問題,以及你在調試器中所做的觀察。 –
也許你應該使用爲選擇生成的隨機數... – drescherjm