C Programming Decision Statements

Last modified by Microchip on 2023/11/09 09:06

Decision-making structures require that the programmer specify one or more conditions to be evaluated or tested by the program, along with a statement or statements to be executed if the condition is determined to be True, and optionally, other statements to be executed if the condition is determined to be False.

Following is the general form of a typical decision-making structure found in most of programming languages:

if Statement

C programming language assumes any non-zero and non-null values as True, and if it is either zero or null, then it is assumed as a False value.

C programming language provides the following types of decision making statements:

if statementAn if statement consists of a boolean expression followed by
one or more statements.
if … else statementAn if statement can be followed by an optional else statement,
which executes when the boolean expression is False.
nested if statementsYou can use one if or else if statement inside another if or else
switch statementswitch statement allows a variable to be tested for equality
against a list of values.
nested switch statementsYou can use one switch statement inside another switch