无法修复排序程序，并复制数组？

Question

这个程序我已经开始应该采取数据和排序然后输出它。

我遇到的问题是，当我排序代码，并由于某种原因输出，前两个值变为0。我认为这是我的排序功能有问题，但我无法弄清楚。我也想用“数据”将值复制到不同的数组“sortedata”，但我有它的方式设置只是将所有值设置为零。对这两个问题有帮助吗？

如果你自己试用才知道你有双重其次，进入这样只有5不会工作它需要5.0

#include "stdafx.h" 
#include <iostream> 
#include <string> 
using namespace std; 

//functions 

void input(double data[], double size) { 


    //enter data 
     for (int i = 0; i < size; i++) { 
      cout << "Enter data element \n"; 
      cin >> data[i]; 
     } 

     //output original 
     cout << "Original Data: \n"; 

     for (int i = 0; i < size; i++) { 
      if (i) { 
       cout << ", "; 
      } 

      cout << data[i]; 
     } 
     cout << "\n"; 

} 
void copy(double source[], double dest[], double size) { 
    for (int i = 0; i <= size; i++) 
     source[i] = dest[i]; 
} 
void sort(double data[], double size) { 

    for (int i = 19; i >= 0; i--) 
    { 
     for (int i = 0; i< 10; i++) 
     { 
      if (data[i]>data[i + 1]) 
      { 

       double temp = data[i + 1]; 

       data[i + 1] = data[i]; 

       data[i] = temp; 

      } 
     } 
    } 

} 
void display(double data[], double size) { 

    //output sorted 

    cout << "Sorted Data \n"; 

    for (int i = 0; i < size; i++) { 
     if (i) { 
      cout << ", "; 
     } 

     cout << data[i]; 
    } 

} 

int main() 
{ 
    //variables 
    bool check = true; 
    double size = 0; 
    double data[20] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }; 
    double sortedata[20] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }; 

    //input 
    while (true) { 

     //input 
     cout << "Enter data item count <1-20> \n"; 
     cin >> size; 

     //check 
     if (size < 1 || size > 20) { 
      cout << "Item count is NOT within required range. The required range is 1 to 20. \n" << "Bye \n"; 
      break; 
     } 

     input(data, size); 
     break; 
    } 
    //copy 
    //copy(data, sortedata, size); 

    //sort 
    sort(data, size); 

    //display 
    display(data, size); 

    return 0; 
} 

Answer 1

首先，在复印功能取代i <= size到i < size

，在排序功能替换i < 10到i < size - 1