sscanf vs istringstream

This is a discussion on sscanf vs istringstream within the C++ Programming forums, part of the General Programming Boards category; What is the istringstream equivalent of sscanf and checking if 4 fields have been read in? Code: if (sscanf(s, "%d ...

  1. #1
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    sscanf vs istringstream

    What is the istringstream equivalent of sscanf and checking if 4 fields have been read in?

    Code:
    if (sscanf(s, "%d %s %c %s", &id, variable, &type, value) == 4)
    versus

    Code:
    std::istringstream mystream(s);
    
    // scan 4 fields
    mystream >> id;
    mystream >> variable;
    mystream >> type;
    mystream >> value;
    
    if (mystream ????)

  2. #2
    C++まいる!Cをこわせ! Elysia's Avatar
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    If a stringstream fails to read something, it sets a bad bid, so just check the stream, ie:
    if (mystream) // OK
    if (!mystream) // Not OK

    if (mystream >> id) // OK
    if (!(mystream >> id)) // Not OK
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

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