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c++streamcharcin

C++ cin char read symbol-by-symbol

I need to read symbol-by-symbol. But I don't know how to read until end of input. As exemple test system will cin>>somecharvariable m times. I have to read symbol-by-symbol all characters. Only m times. How I can do it?

Solution

  • If you want formatted input character-by-character, do this:

    char c;
while (infile >> c)
{
  // process character c
}

    If you want to read raw bytes, do this:

    char b;
while (infile.get(b))
// while(infile.read(&b, 1)   // alternative, compare and profile
{
  // process byte b
}

    In either case, infile should be of type std::istream & or similar, such as a file or std::cin.