isspace() is the way!

This is a discussion on isspace() is the way! within the C++ Programming forums, part of the General Programming Boards category; Hi there! I have a "little" problem.. I want the user to input a string and a number value associated ...

  1. #1
    Burning in Hell! Luigi's Avatar
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    isspace() is the way!

    Hi there!
    I have a "little" problem..

    I want the user to input a string and a number value associated to it..
    like this :

    pi 3.1416

    so I want to put those variable in a map<string,float>

    so guessed I could put the first value all together in a temp string, then sort it out afterward.
    using something like cin.get and isspace().
    So basuically I need a way to go through a string until a white-space is encoutered. Put the first value into another string (map) and put whatever else is after in float(map)...?

    any sugestions?

    Luigi

  2. #2
    I lurk
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    You could use the default behavior of cin to your advantage...

    Code:
    cout << "Please enter a string, and a float  (example: pi 3.14): ";
    float temp_float;
    string temp_string;
    
    cin >> temp_string >> temp_float;
    // put them on the map or whatever
    cin will read up to a space and store it in temp_string, then store the rest in temp_float.

  3. #3
    Just a Member ammar's Avatar
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    or just read char by char with cin.get() as you wish... then if the read char == ' ' just ignore it, what exactly is your problem?
    none...

  4. #4
    Burning in Hell! Luigi's Avatar
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    ho didnt knew I could use cin that way (input 2 things on one line)
    that should do it, thx..

    As for ammar Im just not sure how to read char by char..

    Luigi

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