C Programming
The library function used to find the last occurrence of a character in a string is

strstr()
laststr()
strnstr()
strrchr()
None of these

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C Programming
What is function?

Function is the fundamental modular unit. A function is usually designed to perform a specific task.
Function is a block of code that performs a specific task. It has a name and it is reusable.
All of these
Function is a block of statements that perform some specific task.

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