use the program, Passing-by-Value, on pp. 261 of the text and the program, Passing-by-Reference, on pp. 268 as a starting point for this assignment. Ch. 5, of Ivor Horton's Beginning Visual C++ 2010. Text from page 261, Pass-by-value: // Ex5_02.cpp //
A futile attempt to modify caller arguments #include < iostream > using std::cout; using std::endl; int incr10(int num); // Function prototype int main(void) { int num(3); cout < < endl < < "incr10(num) = " < < incr10(num) < < endl < < "num = " < < num < <
endl; return 0; } // Function to increment a variable by 10 int incr10(int num) // Using the same name might help... { num += 10; // Increment the caller argument – hopefully return num; // Return the incremented value } Text from page 268, Pass-by-reference:
// Ex5_07.cpp // Using an lvalue reference to modify caller arguments #include using std::cout; using std::endl; int incr10(int& num); // Function prototype int main(void) { int num(3); int value(6); int result = incr10(num); cout << endl << “incr10(num) =
“ << result << endl << “num = “ << num; result = incr10(value); cout << endl << “incr10(value) = “ << result << endl << “value = “ << value << endl; return 0; } // Function to increment a variable by 10 int incr10(int& num) // Function with reference argument
{ cout << endl << “Value received = “ << num; num += 10; // Increment the caller argument // - confidently return num; // Return the incremented value } Write a similar program, but change the code to pass two variables to the function call rather than one.
Answer the following questions after completing both programs: What is the purpose of the function header? How may you identify the body of a function? What does the return statement do? Note. Do not combine these programs into one program
