Thread: Reading from an Array

  1. #1
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    Reading from an Array

    Hi, very new to C.

    I have a project that requires me to input a string into a rail fence cipher, I have created a function and passed the string to it, created a 2d array and then printed off the coded text but this is within the function and read straight from the array.

    How do I allocate the output of the array to a string then pass that from the function back to main?

    thanks in advance for any help.

  2. #2
    and the hat of int overfl Salem's Avatar
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    > How do I allocate the output of the array to a string then pass that from the function back to main?
    Rather than doing
    output = cipher(input);

    Do
    cipher(input,output);

    Make the caller responsible for the initial allocation, because they ultimately have to deal with the cleanup anyway.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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