读取RAW音频文件

Question

I am a beginner in C++ and I have a school project implying analysing an audio file and I can't read the file, in the example the program keeps reading the first value from the file

#include <iostream>
#include<fstream>
using namespace std;

int main()
{
    ifstream c;
    c.open("cv.RAW");
    int b;
    while(1)
        {
            c>>b;
            cout<<b<<" ";
        }
    return 0;
}

Answer 1

you need to

1. open your file in binary mode ifstream c("cv.RAW", std::ios_base::binary) , if you read a binary file without this flag it will be treated as a text file and will give you incorrect values.
2. check the file is open by checking if (c.good()) or just if (c) before reading any values
3. check the reads succeed by again checking if (c.good()) or just if (c) after reading each byte
4. read using c.read((char*)&b, sizeof(b)) if you want to read an integer at a time, for a single byte use char ch; c.read(&ch, sizeof(ch)) char ch; c.read(&ch, sizeof(ch))

iostreams don't throw exceptions by default so you always need to check their state every time you use them.