YES, isinteger function can be utilized to verify user input if they are asked to enter how many widgets they wish to purchase.
Describe function.
A function is a segment of clean, reusable code that executes a single, connected operation. A higher level of code reuse and improved application modularity are provided via functions. Multiple aspects like printf() and main have already been shown to you (). These are referred to as built-in functions that the language itself offers, but we can also create our own functions, in the C programming language.
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