[英]C++ ofstream Huge Text File
So, here's my code for a simple part of a class: 因此,这是我的一个类的简单部分的代码:
void ArrayToTextFile::textfiller(string *givenpointer){
cout<< "Recieved array pointer address" << givenpointer << endl;
const char * constantcharversion = path.c_str();
ofstream filler(constantcharversion);
int i = 0;
//string delims = (string)delim;
for(i = 0; i < sizeof(*givenpointer); i++) {
filler << *givenpointer << delim;
givenpointer = givenpointer + 1;
}
filler.close();
}
The pointer points the first element in an array of strings. 指针指向字符串数组中的第一个元素。
delim
is a ';' delim
是';'
This is my main class: 这是我的主要课程:
#include <iostream>
#include "ArrayToTextFile.h"
#include <stdio.h>
#include <stdlib.h>
using namespace std;
int main()
{
system("color 1A");
cout << "Hello world!" << endl;
string kinch[3] = {"a", "second el", "third"};
ArrayToTextFile newone("C:/haha.txt", ';');
string *pointy = &kinch[0];
newone.textfiller(pointy);
return 0;
}
Whenever the program runs, I can never make it to the return statement. 每当程序运行时,我永远都无法使它进入return语句。 In fact I have to click the exit button on the console window.
实际上,我必须单击控制台窗口上的退出按钮。 When I look at the text file created it's huge:
当我查看创建的文本文件时,它是巨大的:
What is my problem? 我怎么了 How can I fix this?
我怎样才能解决这个问题?
You need to pass in the number of elements in the array. 您需要传入数组中元素的数量。
sizeof
will only give you a size in bytes, which is rarely useful. sizeof
只给您一个字节大小,这很少有用。 In order to get the size of an array, you can use (sizeof array)/(sizeof array[0])
, but inside the function you only have a pointer, not an array, and this will give you different results. 为了获得数组的大小,可以使用
(sizeof array)/(sizeof array[0])
,但是在函数内部您只有一个指针,没有数组,这将为您提供不同的结果。
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