Web Reference: In this article, I am going to discuss How to Validate a String in C Language with Examples. Check whether a given string is valid or not When users enter data into a C program, they might type something unexpected. Input validation makes sure the input is correct before the program continues. Without validation, your program might crash or give the wrong result! The examples below show simple ways to check if the user's input is valid in C. Oct 21, 2012 ยท Your parameter is an array of pointers, not a string. The type of side1 should be char*, not char*[].
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