C Programming 

What is C โ€“ part 2

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What is C โ€“ part 2

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๐Ÿ’ป What is C? โ€“ Part 2: Intermediate Concepts

In Part 1, you likely learned the basics of the C programming language โ€” such as data types, variables, operators, and simple input/output.



Now, in Part 2, we will explore intermediate concepts of C that are essential for building real programs.

๐Ÿ”น Part 2: Key Topics in C Programming

1๏ธโƒฃ Control Statements (if, else, switch)

These are used to control the flow of the program based on conditions.

c
if (marks >= 40) {
printf("Pass");
} else {
printf("Fail");
}

2๏ธโƒฃ Loops (for, while, do-while)

Loops allow repeated execution of code blocks.

c
for (int i = 1; i <= 5; i++) {
printf("%d ", i);
}

3๏ธโƒฃ Functions

Functions are blocks of code designed to perform specific tasks.

c
int add(int a, int b) {
return a + b;
}

4๏ธโƒฃ Arrays

Arrays are used to store multiple values of the same type.

c
int marks[5] = {90, 85, 88, 75, 95};

5๏ธโƒฃ Pointers (Introduction)

Pointers store the address of a variable. This is a powerful concept in C.

c
int x = 10;
int *ptr = &x;
printf("%d", *ptr); // Outputs 10

๐Ÿ“Œ Other Important Concepts

Concept Description
Structures Used to group different types of variables
File Handling To read/write from/to files
Recursion A function calling itself
Preprocessor Directives Commands like #include, #define

โœ… Example Program โ€“ Function & Loop

c
#include <stdio.h>

int multiply(int a, int b) {
return a * b;
}

int main() {
for (int i = 1; i <= 5; i++) {
printf("2 x %d = %d\n", i, multiply(2, i));
}
return 0;
}

๐Ÿง  Tip for Learners:

  • Practice writing small programs like calculator, table printing, and sorting arrays.

  • Use an online compiler like replit.com or ideone.com.

Would you like a Part 3 covering advanced topics like pointers to functions, dynamic memory, or file I/O?



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