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5 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, the statements inside the if True
block will be executed. Otherwise, the control of execution is passed to
Body of if
the next statement after the if block. The syntax of the if statement is
given below:
Statement just
if(condition)
below if
{
statement(s);
}
If the value of the condition is nonzero (True), the body of the if statement gets executed. Some
examples of valid if statement are:
• if(x > 0)
cout<< x << " is a positive number";
• if(x) // Same as: if (x != 0)
cout<< x << " is a nonzero number";
• if(guess == num)
cout<< "You guessed the right number!";
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