Chapter 4: Control Flow Statements

 Control flow statements are essential for controlling the execution flow of a program based on conditions. In this chapter, we'll dive into if-else statements, loops (such as while, for, and do-while), and switch statements. You'll learn how to make decisions, iterate over blocks of code, and handle different cases efficiently using these control flow statements.

Example:

#include <stdio.h> int main() { int age = 20; if (age >= 18) { printf("You are eligible to vote.\n"); } else { printf("You are not eligible to vote.\n"); } int i; for (i = 1; i <= 5; i++) { printf("%d ", i); } printf("\n"); int j = 0; while (j < 3) { printf("Hello, world!\n"); j++; } return 0; }

Explanation:

We use an if-else statement to check the age and determine voting eligibility. A for loop is used to print numbers from 1 to 5. A while loop is used to print "Hello, world!" three times.

To compile and run the program, follow the same steps as in the previous chapters.

In the next chapter, we'll explore functions, which are essential building blocks in C programming, allowing us to modularize code and promote reusability.