frankfurt_schoolgirl [she/her]

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Joined 2 years ago
Cake day: July 25th, 2022
  • frankfurt_schoolgirl [she/her]@hexbear.nettoProgramming@programming.dev•How do I handle an input thats more than the char size in c?English
    13·
    1 year ago

    If you want to accept a user input of any length, you have to read the input piece by piece and allocate a new buffer if the original becomes full. Basic steps would be:

    1. Use malloc to make a char * buffer
    2. Read one character at a time in a while loop, keep track of your position in the buffer
    3. If you get an EOF character, add a \0 to your buffer and break the loop. You’re done!
    4. If the position is greater than the length, allocate a new buffer that has twice the length. Use memcpy to copy the stuff from the old buffer to the new one. Use free to get rid of the old buffer.

    This will work until you fill the entire memory of your computer. You should probably set a max length and print an error if it is reached.