How can I get what my main function has returned?

Question

In a C program if we want to give some input from terminal then we can give it by:

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

In the same way, if we

Answer 1

Your shell probably has a special variable $?, which holds the last program returned value. So, soon after your program finishes, you can run:

echo $?

to see the returned value.