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What is printf? Meaning: printf means “print formatted” — it shows messages or numbers on the screen. Think of it like: Telling the computer:“Say this out loud on the screen.” Example: printf(“Hello!”); The computer will show: Hello! You can also print numbers: int age = 10;printf(“I am %d years old”, age); Here: Output: I am … Read more

Program: Add Two Numbers #include <stdio.h>int main() { int num1 = 5; int num2 = 7; int sum; sum = num1 + num2; printf(“The sum of %d and %d is: %d”, num1, num2, sum); return 0;} Explanation of Each Part 1. #include <stdio.h> 2. int main() { 3. int num1 = 5; 4. int num2 … Read more

The three most important header files are given below. 1. stdio.h This file helps your program talk to the user. Example:If you want the computer to say:“Enter your name:”and wait for the user to type something, you use stdio.h. 2. conio.h This file helps your program work with the keyboard and screen in a more … Read more

C is one of the oldest and most powerful programming languages still in use today. Created in the early 1970s by Dennis Ritchie at Bell Labs, C was designed to help write system software like operating systems and compilers. In fact, much of the original UNIX operating system was written in C — and it’s … Read more

What Are Variables in C? In C, a variable is like a labeled container in your computer’s memory where you can store data that may change during the program’s execution. It’s akin to a box with a name on it, where you can place and retrieve items as needed. Real-Life Analogy: Bank Account Imagine a … Read more