Chapter 2

Question 1

How do I use the scientific command and what does it do?

Answer 1

• e.g cout &laquo_space;” Height is “ «scientific«height«“cm.”;
• 1.750000e+002 means 1.75 x 10^2

Question 2

What is \n and endl?

Answer 2

• Both will create a new lines in the output stream. e.g cout &laquo_space;“\nPlease enter your name\n”;
• The ‘\n’ must always be between quotes and therefore can also be embedded within the output text string.

Question 3

What are the main 3 variables?

Answer 3

• char (alphabet) : 1 byte
• int (whole numbers): 4 bytes
• double (real numbers) : 8 bytes