What is the return value type of main function in c++

C standard stipulates: The return value type of the main function should be defined as int type.

C 98 defines the following two ways of defining the main function:

int main( ) 
int main( int argc, char *argv[] )

The return value type of the main function must be int. If there is no return statement at the end of the main function, C 98 stipulates that the compiler should automatically add return 0; to the generated object file.

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