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How do I properly use the strcmp() function?

April 26, 2017function properly strcmp

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How do I properly use the strcmp() function?

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Carefully. First, note that it can return any integer, not just 1, 0, and -1. Many programmers find it counterintuitive that 0 corresponds to the strings being equal. Second, it is not guaranteed (or likely) to work if you pass it a NULL pointer. I get crazy results with the sqrt and other math functions. Be sure to #include in your program. Also, make sure that other functions returning doubles are correctly defined. Depending on your setup, you may need to tell the compiler to use the math library, e.g., “gcc hello.c -lm”.