Question

Explain the components of the standard C/C++

main()

function definition below.

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

int returnValue = 0;

// implementation of main’s functional code not shown ...

return returnValue;

}

Answer 1

//here our main function starts here

//the int keyword in the below function tells function has to return int value. argc , argv are two keywords which are used to pass command line arguments.

argc : is used to receive number of arguments that the program needs

argv : is the vector of those arguments with values

//function starts here

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

//declaring a variable named returnValue which is intialized to 0

int returnValue = 0;

// implementation of main’s functional code not shown ...

//returning the variable which has zero value

return returnValue;

//function ends here

}