Page 40 - Modular_V1.1_Flipbook
P. 40
05 CONDITIONAL
STATEMENTS
Your Aim
to learn about:
The if Statement The if…else Statement
The if…else…if Ladder The switch Statement
Difference between if and switch Statements More Solved Programs
Conditional statements are also known as decision making statements or selection statements.
These statements are used to test the conditions and decide the flow of a program on the basis
of result of these conditions. The result of these conditions may be true or false. C++ provides
the following conditional statements:
if statement if…else statement if…else…if ladder switch statement
THE IF STATEMENT
The if statement is the simplest conditional statement. It selects and Test Expression False
executes the statement(s) based on a given condition. If a particular
condition or expression evaluates to True, then a set of statements will True
be executed. Otherwise, the control of execution is passed to the next
statement after the if block. The syntax of the if statement is given below: Body of if
if(condition){
statement(s); Statement just
below if
}
If the value of the condition is nonzero, then the body of if gets
executed. Some examples of valid if statement are:
• if (x > 0) Clickipedia
cout << a << “is a positive number”;
You can also write conditional
• if (x) // Same as : if (x != 0)
statements without the braces if
cout << x << “is a nonzero number”;
there is only one line of code.
• if (guess == num)
cout << “You guessed the right number”;
• if (x <= y)
cout << x << “ is greater than ” << y;
38 Touchpad MODULAR (Version 1.1)-X

