Handling Non-Ascii Chars in C++

Question

I am facing some issues with non-Ascii chars in C++. I have one file containg non-ascii chars which I am reading in C++ via file Handling. After reading the file(say 1.txt)

Answer 1

At least if I understand what you're after, I'd do something like this:

#include 
#include 
#include 
#include 
#include 

std::string to_hex(char ch) {
    std::ostringstream b;
    b << "\\x" << std::setfill('0') << std::setw(2) << std::setprecision(2)
        << std::hex << static_cast(ch & 0xff);
    return b.str();
}

int main(){
    // for test purposes, we'll use a stringstream for input
    std::stringstream infile("normal stuff. weird stuff:\x01\xee:back to normal");

    infile << std::noskipws;

    // copy input to output, converting non-ASCII to hex:
    std::transform(std::istream_iterator(infile),
        std::istream_iterator(),
        std::ostream_iterator(std::cout),
        [](char ch) {
            return (ch >= ' ') && (ch < 127) ?
                std::string(1, ch) :
                to_hex(ch);
    });
}