Summary Understanding Decision Control Structures in C

Decision Control Structure


1. Introduction
Decision control structures are fundamental to
programming. They allow programs to execute
different blocks of code based on certain
conditions. This enables decision-making,
ensuring that the program can react
dynamically to user input, calculations, or data
changes.
In this document, we will explore various types
of decision control structures, their syntax, and
practical applications with examples.


2. Decision! Decision!
Decision-making is a crucial aspect of
programming that determines the flow of
execution. When a condition is met, a specific

, block of code runs; otherwise, it may execute
alternative blocks or skip execution entirely.
Example:
int age = 18;
if (age >= 18) {
printf("You are eligible to vote.\n");
}
In the above example, the program checks
whether the age is greater than or equal to 18.
If the condition is true, it prints the message.
Key Concepts:
 Condition Evaluation: The condition inside
the if statement is evaluated.
 Boolean Values: The condition must result
in either true (nonzero) or false (zero).
 Execution Control: If the condition is true,
the enclosed statements execute.