problem comparing strings with strcmp

This is a discussion on problem comparing strings with strcmp within the C Programming forums, part of the General Programming Boards category; given two strings: r_words[i].word = "auto"; // from a struct s[] = "auto"; then compared with this code: int f; ...

  1. #1
    Registered User
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    Question problem comparing strings with strcmp

    given two strings:

    r_words[i].word = "auto"; // from a struct
    s[] = "auto";

    then compared with this code:

    int f;
    f = strcmp(r_words[i].word, s);
    if(!f)
    cout << ........

    I can't understand why strcmp doesn't seem to recognize that both strings are identical. Thanks for any suggestions. Mike

  2. #2
    Registered User mlupo's Avatar
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    Try printing out each value to stdout just before you compare them.

    I think that the struct r_words[i].word might be referencing the wrong string in the array of structures. make sure that i is referencing the string you really think it is referencing.
    again, by printing them out just before you compare them will give you some visibility into your problem.


    Mike
    NEVER PET YOUR DOG WHILE IT'S ON FIRE!

  3. #3
    Registered User mlupo's Avatar
    Join Date
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    here's a little clever way to test this without initializing a variable.
    you had
    Code:
    int f; 
    f = strcmp(r_words[i].word, s); 
    if(!f)
    try this....
    Code:
    if(!strcmp(r_words[i].word, s) )
    it's fewer lines of code, thus it's easier to read.
    try to get in that habit now.
    NEVER PET YOUR DOG WHILE IT'S ON FIRE!

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