C does not support function overloading. How can we then have 3 prototypes for main?
What is the historical reason for having 3 prototypes?
C does not support function overloading. How can we then have 3 prototypes for
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C does not support function overloading. How can we then have 3 prototypes for main?
What is the historical reason for having 3 prototypes?
There are only two prototypes for
mainthat a standard-conforming C implementation is required to recognize:int main(void)andint main(int, char *[]). This is not overloading, since there can still only be onemainper program; having avoid foo(int, double)in one program and achar *foo(FILE *)in another isn’t overloading either.The reason for the two prototypes is convenience: some applications want command-line arguments, while others don’t bother with them.
All other prototypes, such as
void main(void)andint main(int, char *[], char *[]), are compiler/platform-dependent extensions.