C++ rand（）函数不使用'；t工作正常

我对rand（）函数有问题 我想建立一个程序，当你掷6000次骰子时，显示每一面骰子的数量

我写了这段代码

#include <iostream>
using namespace std;
#include <iomanip>
using std::setw;
#include <cstdlib>
#include <ctime>
int main()
{
int face ;
int frequency1 =0;
int frequency2 =0;
int frequency3 =0;
int frequency4 =0;
int frequency5 =0;
int frequency6 =0;
for(int counter =1;counter <=6000;counter++){

      face = 1+rand()%6;
      switch(face){
    case 1:
        ++frequency1;
        break;

     case 2:
        ++frequency1;
        break;

     case 3:
        ++frequency1;
        break;

     case 4:
        ++frequency1;
        break;

     case 5:
        ++frequency1;
        break;

     case 6:
        ++frequency1;
        break;
     default:
        cout<<"program should never get here!!! ";
        break;
  }}
  cout<<"the number of face 1 is : "<<frequency1<<endl;
 cout<<"the number of face 2 is : "<<frequency2<<endl;
 cout<<"the number of face 3 is : "<<frequency3<<endl;
 cout<<"the number of face 4 is : "<<frequency4<<endl;
 cout<<"the number of face 5 is : "  <<frequency5<<endl;
 cout<<"the number of face 6 is : "      <<frequency6<<endl;
 return 0;
 }

---

您只需不断添加到

frequency1

，而不是其他情况。我试着向你解释，但你似乎还是不明白。以下是编辑后的代码：

#include <iostream>
using namespace std;
#include <iomanip>
using std::setw;
#include <cstdlib>
#include <ctime>

int main() {
    int face;
    int frequency1 = 0;
    int frequency2 = 0;
    int frequency3 = 0;
    int frequency4 = 0;
    int frequency5 = 0;
    int frequency6 = 0;
    for(int counter =1;counter <=6000;counter++){
        face = 1+rand()%6;
        switch(face){
            case 1:
                ++frequency1;
                break;

            case 2:
                ++frequency2;
                break;

            case 3:
                ++frequency3;
                break;

            case 4:
                ++frequency4;
                break;

            case 5:
                ++frequency5;
                break;

            case 6:
                ++frequency6;
                break;
            default:
                cout<<"program should never get here!!! ";
                break;
        } 
    }
    cout<<"the number of face 1 is : "<<frequency1<<endl;
    cout<<"the number of face 2 is : "<<frequency2<<endl;
    cout<<"the number of face 3 is : "<<frequency3<<endl;
    cout<<"the number of face 4 is : "<<frequency4<<endl;
    cout<<"the number of face 5 is : "<<frequency5<<endl;
    cout<<"the number of face 6 is : "<<frequency6<<endl;
    return 0;
}

#包括
使用名称空间std；
#包括
使用std：：setw；
#包括
#包括
int main（）{
内面；
int frequency1=0；
int frequency2=0；
int frequency3=0；
int frequency4=0；
int frequency5=0；
int frequency6=0；
对于（int counter=1；您总是添加到
frequency1
的计数器），您期望得到什么？另外，对于标记器来说，这不一定是重复的。只是一个印刷品error@AndrewL啊，你完全正确，也许使用数组也会使生活更简单。@πάνταῥεῖ 完全同意。像这样的问题应该结束
#include <iostream>
using namespace std;
#include <iomanip>
using std::setw;
#include <cstdlib>
#include <ctime>

int main() {
    int face;
    int frequency1 = 0;
    int frequency2 = 0;
    int frequency3 = 0;
    int frequency4 = 0;
    int frequency5 = 0;
    int frequency6 = 0;
    for(int counter =1;counter <=6000;counter++){
        face = 1+rand()%6;
        switch(face){
            case 1:
                ++frequency1;
                break;

            case 2:
                ++frequency2;
                break;

            case 3:
                ++frequency3;
                break;

            case 4:
                ++frequency4;
                break;

            case 5:
                ++frequency5;
                break;

            case 6:
                ++frequency6;
                break;
            default:
                cout<<"program should never get here!!! ";
                break;
        } 
    }
    cout<<"the number of face 1 is : "<<frequency1<<endl;
    cout<<"the number of face 2 is : "<<frequency2<<endl;
    cout<<"the number of face 3 is : "<<frequency3<<endl;
    cout<<"the number of face 4 is : "<<frequency4<<endl;
    cout<<"the number of face 5 is : "<<frequency5<<endl;
    cout<<"the number of face 6 is : "<<frequency6<<endl;
    return 0;
}