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C · BeginnerSnippet

Variable Data Types

In C, you must declare the type of data a variable will hold, such as integers (int), floating-point numbers (float), or single characters (char).

snippet.c

int age = 25;
float temperature = 36.5;
char grade = 'A';

datatypessyntax

C · BeginnerSnippet

If-Else Control Flow

Conditional statements allow the program to make decisions and execute different blocks of code based on a boolean expression.

snippet.c

int score = 85;
 
if (score >= 50) {
    printf("Pass\n");
} else {
    printf("Fail\n");
}

controlflow

C · BeginnerSnippet

Hello World Basics

This is the simplest C program. It includes the standard input-output library and defines the main entry point where execution begins.

snippet.c

#include <stdio.h>
 
int main() {
    printf("Hello, World!\n");
    return 0;
}

syntaxfunctions

C · BeginnerSnippet

Simple For Loop

A for loop repeats a block of code a specific number of times, using a counter variable to track progress.

snippet.c

for (int i = 0; i < 5; i++) {
    printf("Iteration: %d\n", i);
}

controlflowsyntax

C · BeginnerSnippet

Function Definition

Functions are reusable blocks of code that perform specific tasks. They can take parameters and return a value.

snippet.c

int add(int a, int b) {
    return a + b;
}
 
// Usage: int result = add(5, 3);

functionsbestpractices

C · BeginnerSnippet

Strings as Character Arrays

In C, strings are simply arrays of characters ending with a special null character '\0'.

snippet.c

char greeting[] = "Hello";
printf("%s has %lu characters", greeting, strlen(greeting));

arrayssyntax

C · BeginnerSnippet

Defining a Struct

A struct is a user-defined data type that allows grouping related variables of different types together.

snippet.c

struct Player {
    int id;
    float health;
};
 
struct Player p1 = {1, 100.0};

syntaxdatatypes

C · BeginnerSnippet

The Switch Statement

The switch statement is an alternative to long if-else chains. It compares a variable against multiple 'case' values and executes the matching block.

snippet.c

switch (grade) {
    case 'A':
        printf("Excellent!\n");
        break;
    case 'B':
        printf("Good job!\n");
        break;
    default:
        printf("Keep trying.\n");
}

controlflowsyntax