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String - Reverse @ same place in C :-

Discussion in 'C' started by amitajcom, Apr 2, 2014.

  1. amitajcom

    amitajcom New Member

    how to reverse a string without changing its place in c ?

    eg - input: welcome to codechef website
    output: emoclew ot fehcedoc etisbew
  2. DRK

    DRK New Member

    I think you meant rerversing words in a string.
    If words are split only by spaces the function would look like this:
    void reverse_words(char *str)
        char *end, *ptr = strtok(str, " ");
        while (ptr != NULL)
            end = ptr + strlen(ptr);
            ptr = strtok(NULL, " ");
            if (ptr != NULL)
                *end = ' ';

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