Can C 's `main` Function Be Called Recursively?

Can Recursive Main Functions Be Used in C ?

The code snippet provided in the question raises concerns regarding the validity of recursive calls to the main function in C .

While the compiler may accept the code without error, its behavior is uncertain and potentially undefined.

According to the C standard, the main function should not be called by an expression. This rule implies that direct calls to main, as well as calls through pointer indirection or function addresses, are prohibited.

Despite this prohibition, some compilers may allow such calls to main. However, this behavior is not guaranteed and can vary between different environments.

The consequences of calling main within itself are undefined. The program may enter an infinite loop, terminate unexpectedly, or exhibit unpredictable results. Calling main can also lead to issues when attempting to debug or profile the program.

In conclusion, recursive calls to main in C are not supported by the standard and should be avoided. Attempting to use such calls can result in undefined behavior and unreliable program execution.

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