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Let's Learn C Welcome to the world of C programming! As a language that has stood the test of time, C serves as a foundational skill for many programmers. Its efficiency, close-to-hardware capabilities, and widespread use make it an essential language to master. Let's dive into the basics and get you started on your journey. Getting Started With C 1. Hello, World! #include <stdio.h> int main() { printf("Hello, World!\n"); return 0; } In this simple program, we include the standard input/output library, stdio.h. The main function is the entry point of every C program. Inside it, we use printf to display the classic "Hello, World!" message. The return 0; line indicates successful program execution. 2. Variables and Data Types #include <stdio.h> int main() { int age = 25; float height = 5.9; char grade = 'A'; printf("Age: %d\n", age); printf("Height: %f\n", height); printf("Grade: %c\n", grade); return 0; } Here, we declare variables with different data types (int, float, and char). We then print them using printf. %d is a format specifier for integers, %f for floats, and %c for characters. 3. User Input #include <stdio.h> int main() { char name[50]; printf("Enter your name: "); scanf("%s", name); printf("Hello, %s!\n", name); return 0; } This program uses scanf to get user input. We declare a character array name to store the input. Note that %s is used as the format specifier for strings. 4. Conditional Statements (if-else) #include <stdio.h> int main() { int num; printf("Enter a number: "); scanf("%d", &num); if (num > 0) { printf("Positive number\n"); } else if (num < 0) { printf("Negative number\n"); } else { printf("Zero\n"); } return 0;} This example demonstrates the use of conditional statements ( if, else if, and else) based on user input. Resources Books: "C Programming Absolute Beginner's Guide" by Perry and Miller Online Courses: Coursera's "C Programming for Beginners" by University of California, Irvine Interactive Platforms: HackerRank's C Language Certification Documentation: C Programming Documentation Practice Problems: LeetCode's C Programming Section