C++ Primer, Fifth Edition

Completing the Program

What remains is to print our result:

std::cout << "The sum of " << v1 << " and " << v2          << " is " << v1 + v2 << std::endl;

This statement, although longer than the one that prompted the user for input, is conceptually similar. It prints each of its operands on the standard output. What is interesting in this example is that the operands are not all the same kinds of values. Some operands are string literals, such as "The sum of ". Others are int values, such as v1, v2, and the result of evaluating the arithmetic expression v1 + v2. The library defines versions of the input and output operators that handle operands of each of these differing types.

Exercises Section 1.2

Exercise 1.3: Write a program to print Hello, ...