Module 5

This statement may be used to stop a loop's current iteration and begin the next one.

Continue

The statements in the body of a while loop may never be executed, whereas the statements in the body of a do-while loop will be executed:

at least once

To allow file access in a program, you must #include this header file.

fstream

How many times will the following loop display "Hello"? for (int i = 1; i < 20; i--) cout << "Hello!" << endl;

An infinite number of times

A file must be ________ before data can be written to or read from it.

opened

Assuming outFile is a file stream object and number is a variable, which statement writes the contents of number to the file associated with outFile?

outFile << number;

What will the following code display? (Beware, this is a tricky one.) int x = 0; for (int count = 0; count < 5; count++) x += count; cout << x << endl;

10

How many times will the following loop display "Hello"? for (int i = 1; i <= 4; i++) for (int j = 1; j <= 5; j++) cout << "Hello" << endl;

20

The following code correctly validates the variable value to be in the range of 0 through 100: while ( (value < 0) && (value > 100) ) { cout <<"Invalid entry. Please enter a number between 0 and 100: " cin >> value; }

False

What is wrong with the following code? int sum; //sum is accumulator int num ; //counter for (num =1; num <= 10; num++) { sum += num; } cout << "Sum of numbers 1 - 10 is " << sum << endl;

The variable sum is not initialized.

The while loop has two important parts: an expression that is tested for a true or false value, and:

a statement or block that is repeated as long as the expression is true