在C ++中通过ifstream读取文件时出现问题 [英] Problem in reading file through ifstream in C++

问题描述

我试图读取一个字符长度为78125的文本文件，当我在C ++程序中按如下所示读取并计算字符数时，输出为77500.对于总字符长度大于上述内容的文件，输出不实际...
我正在执行此操作以读取大文件之类的mp3

I was trying to read a text file of which the character length is 78125 and when I read and count character wise in my C++ program as given below the output was 77500. And for files of total character length greater than the above the output was not actual...
I''m doing this to read a mp3 like large file

#include<fstream>
#include<iostream>
using std::fstream;
using std::ifstream;
using std::cout;
using std::cin;
void main()
{
    char c;
    int i=0;
    ifstream f1("one.mp3");
    if(f1!=0)
    {
    while(f1>>c)
    {
        i++;
    }
    f1.close();
    cout<<"FILE LENGTH "<<i;
            }
    else
        cout<<"File Not Found";
    cin>>c;
}

谢谢
Dinesh Balu

Thank you
Dinesh Balu

推荐答案

替换行

Dinesh Balu写道:

Dinesh Balu wrote:

ifstream f1("one.mp3");

ifstream f1("one.mp3");

与

with

ifstream f1("one.mp3", std::ios::in | std::ios:binary);

:)

谢谢，...
可以正常工作99％，但不能在1％的文件中工作.........对于某些文件，它在某些数据之前返回.....
无论如何，谢谢……但是"ios :: binary | ios :: in"模式的含义是什么.

Thank you,...
That''s working 99% but not in 1% files......... for some file it returns previous to some data.....
Any way thanks...... but what''s that "ios::binary|ios::in" mode means.

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