Why a warning of “control reaches end of non-void function” for the main function?

Question

I run the following C codes and got a warning: control reaches end of non-void function

int main(void) {}

Any suggestions?

Answer 1

The main function has a return-type of int, as indicated in

int main(void)

however your main function does not return anything, it closes after

puts(strB);

Add

return 0;

after that and it will work.