Question

大家好，我试图找到输入到循环中的随机数量的平均值。为了总结原因循环后我能够打印正确的总数，但当我试图找到平均值我得到一个奇怪的答案。任何人都可以帮我这个或直接到这里的线程可以帮助？我在这里找不到任何东西。

这是我的程序代码，它不起作用。

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main()
{
ifstream inData;
string golferFile;
string golfer;
int matches;
int score;

cout << endl;
cout << "Enter the golfer's filename: ";
cin >> golferFile;
inData.open(golferFile.c_str());
getline(inData, golfer);
inData >> matches;
cout << endl;
cout << "The golfer " << golfer << " has " << matches << " matches with         scores"
          " of" << endl;
cout << endl;
int count;
count = 1;
int matchNumber;
matchNumber = 1;
int sum;
while(count <= matches)
  {
     inData >> score;
     cout << "Match " << matchNumber << ": " << score << endl;
     matchNumber++;
     count++;
     sum = sum + score;
   }
  }
int mean;
mean = sum / matches;
cout << "The mean score is " << mean << endl;
return 0;
}

我收到的输出是平均值

平均分为1399255

Answer 1

I found several error in your code.

you forget to initialize your sum variable.
in while loop an extra brace found.remove it
you didn't write anything to stop your loop.that why your loop run infinite time.so initialize you loop also.

在c ++中查找循环中的总和的平均值

1 个答案: