c

#include <stdio.h>

int main() {
    printf("Hello, World!\n");
    return 0;
}

#include <stdio.h>

int main() {
    char name[] = "Santosh";
    int age = 25;
    printf("Name: %s\n", name);
    printf("Age: %d\n", age);
    return 0;
}

#include <stdio.h>

int main() {
    int a = 10, b = 5;
    printf("Addition: %d\n", a + b);
    printf("Subtraction: %d\n", a - b);
    printf("Multiplication: %d\n", a * b);
    printf("Division: %d\n", a / b);
    printf("Modulus: %d\n", a % b);
    return 0;
}

#include <stdio.h>

int main() {
    int age = 20;
    if (age >= 18) {
        printf("Eligible for voting\n");
    } else {
        printf("Not eligible for voting\n");
    }
    return 0;
}

#include <stdio.h>

int main() {
    // For loop example
    for (int i = 1; i <= 5; i++) {
        printf("Santosh is learning C - Iteration: %d\n", i);
    }

    // While loop example
    int count = 1;
    while (count <= 3) {
        printf("Dhruv is exploring C - Attempt: %d\n", count);
        count++;
    }
    return 0;
}

#include <stdio.h>

void greet(char name[]) {
    printf("Hello, %s! Welcome to Pynfinity.\n", name);
}

int main() {
    greet("Santosh");
    greet("Kumar");
    return 0;
}

#include <stdio.h>

int main() {
    char names[4][10] = {"Santosh", "Kumar", "Dhruv", "Pynfinity"};
    for (int i = 0; i < 4; i++) {
        printf("Name: %s\n", names[i]);
    }
    return 0;
}

#include <stdio.h>

int main() {
    int num = 10;
    int *ptr = &num;

    printf("Value of num: %d\n", num);
    printf("Address of num: %p\n", &num);
    printf("Value stored at ptr: %d\n", *ptr);

    return 0;
}

#include <stdio.h>
#include <string.h>

int main() {
    char str[20] = "Pynfinity Channel";

    printf("String: %s\n", str);
    printf("Length of string: %lu\n", strlen(str));

    // Copy string
    char copy[20];
    strcpy(copy, str);
    printf("Copied string: %s\n", copy);

    return 0;
}

#include <stdio.h>

struct Person {
    char name[20];
    int age;
};

int main() {
    struct Person p1 = {"Santosh", 25};
    struct Person p2 = {"Kumar", 30};

    printf("Name: %s, Age: %d\n", p1.name, p1.age);
    printf("Name: %s, Age: %d\n", p2.name, p2.age);
    return 0;
}

#include <stdio.h>

int main() {
    FILE *file = fopen("example.txt", "w");

    if (file == NULL) {
        printf("Could not open file\n");
        return 1;
    }

    fprintf(file, "This is a test file created by Santosh.\n");
    fclose(file);

    // Reading from file
    file = fopen("example.txt", "r");
    char ch;
    while ((ch = fgetc(file)) != EOF) {
        putchar(ch);
    }
    fclose(file);

    return 0;
}