我对 C++ 比较陌生，今年才开始学习。我无法编写一个小程序来接收文本文档并将其存储在数组中。然后取该数组并以某种方式随机化这些值。这是一个排班计划，将骑手和马匹安排到合适的位置。
我在这个函数（gen()）中尝试的是将 entry[num] 复制到 entry2[num2] 。其中 num 是条目的数量，num2 是随机生成的 rand() 数。然后我希望它检查新条目是否比旧条目至少多 15 个位置（在这种情况下.. 所以骑马的人可以在他的下一个事件之前休息一下）
所以你可以猜到..这个应用程序不起作用，我猜有一个更简单的方法？我怎样才能将变量发送到这个数组中，我怎样才能让这个函数将数组返回到我的 main .. 我通过指针猜测？
我在下面附上了整个代码。
/* ________________________________________________________________________________
* | TITLE: main.cpp |
* | AUTHOR: Samuel Abbott (samuel.d.abbott@gmx.com) |
* | PURPOSE: to take camp draft data in, randomise it with certain values, |
* | and output the new roster as a text document |
* | DATE: may 1, 2012 |
* | LAST EDIT: may 3,2012 |
* |______________________________________________________________________________|
*/
#include <iostream>
#include <string>
#include <stdlib.h> //random number
#include <time.h> //random number
#include <fstream> //used for input / output of external files
using namespace std;
/*
* TITLE: gen
* PURPOSE: to randomise the entries , check to see if they are more then 15 units apart, and return a pointer to the randomised array
* string entry[] holds original values
* int num [] holds number of entries
*/
sting gen(string entry[], int num)
{
int count = 0;
string entry2[num]; //randomised array
/* initialize random seed: */
srand(time(NULL));
for (count =0; count < num)
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
/* a series of if checks to make sure the entry is no less then 15 positions from the previous entry */
if (entry2[num2]=entry[num-15])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-14])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-13])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-12])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-11])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-10])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-9])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-8])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-7])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-6])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-5])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-4])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-3])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-2])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else if (entry2[num2]=entry[num-1])
{
num2 = rand() % num; //generate random number
entry[num] = entry2[num2]; //copy number from array to a random position in the next array
}
else
{
entry[num] = entry2[num2];
}
}
string pointer* = entry2[]
return pointer
}
/*
* Title : Loading
* Purpose: This function generates a loading animation. in other words. just a fancy graphic.
* HAS NO LOADING PURPOSE
*/
void loading()
{
/* Declare loading variable, this variable is just the screen printout */
string loading = "...";
int time = 0;
int loadtime = 10;
/* print out loading animation */
while (time != loadtime)
{
cout << loading;
time++;
}
}
void loading();
/*
* Title: Main
* Purpose: this is the main function for the randomisation program
*/
int main()
{
//declare all variables
string fname = "";
int count;
string line;
ifstream inputfile;
char c;
int num=0;
/* introduction */
cout << "Roster Randomisation Generator" << endl;
/* Get input for roster name */
cout << "Enter a name for the roster, such as 13022012coolah:"<<endl;
cin>> fname;
/* Begin generating roster */
cout << "Roster Generation in progress." << endl;
loading();
/* get amount of lines in text file .. used to determine how many entries there are to avoid printing blank spaces*/
inputfile.open("output.txt");
while (inputfile.good())
{
c = inputfile.get();
if (c=='\n')
{
num++;
}
}
inputfile.close();
cout<<"Number of Entries counted is: "<<num<<endl;
string entry[num];
cout << "Grabbing entries from entry file..."<<endl;
/* open text file*/
inputfile.open("output.txt");
/* read all data into the array entry[] */
for (count = 0; count < num; count++)
{
getline(inputfile,line); //Gets a single line from example.txt
entry[count]=line;
// inputfile >> entry[count];
}
inputfile.close();
cout <<"Found the following entries: " <<endl;
/* output captured entries*/
for (count =0; count < num; count++)
{
cout <<entry[count] <<endl;
}
return 0;
}