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cgccfgets

Fgets while loop, compiler warning about a statement with no effect

What can I do to get rid of the compiler warning about a statement with no effect? I'm using fgets to read the output of a bash command, but I don't need to or want to do anything with it apart from outputting it to my buffer.

while (fgets(pid, sizeof(pid), fp) != NULL) {
    1; //Statement with no effect :(
}
Solution

  • Why do you have the 1; line? You can have empty while loops

    while (fgets(pid, sizeof(pid), fp) != NULL) {
}

    Or

    while (fgets(pid, sizeof(pid), fp) != NULL); // Note semi-colon

    It's probably best to avoid the second option as it's easier to misunderstand what's going on.