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

#include <stdio.h>
int main() {
    printf("Your Name Here");
    return 0;
}

#include <stdio.h>
#include <string.h>
int main() {
    char name[20];
    int rollno;
    float marks;
    char grade;

    printf("Enter Name\n");
    fgets(name, sizeof(name), stdin);
    name[strcspn(name, "\n")] = '\0';

    printf("Enter Roll Number\n");
    scanf("%d", &rollno);

    printf("Enter Marks\n");
    scanf("%f", &marks);

    getchar();  // flush newline from buffer

    printf("Enter Grade\n");
    grade = getchar();

    printf("Name: %s\n", name);
    printf("Roll: %d\n", rollno);
    printf("Marks: %.2f\n", marks);
    printf("Grade: %c\n", grade);

    return 0;
}

#include <stdio.h>
int main() {
    char input;
    printf("Enter any character\n");
    input = getchar();
    printf("ASCII Value: %d", input);
    return 0;
}

#include <stdio.h>
int main() {
    float length, breadth, area;
    printf("Enter the length: ");
    scanf("%f", &length);
    printf("Enter the breadth: ");
    scanf("%f", &breadth);
    area = length * breadth;
    printf("Area of rectangle: %.2f", area);
    return 0;
}

#include <stdio.h>
int main() {
    float radius, area;
    const float PI = 3.14f;
    printf("Enter the radius: ");
    scanf("%f", &radius);
    area = PI * radius * radius;
    printf("Area of circle: %.2f", area);
    return 0;
}

#include <stdio.h>
int main() {
    float p, r, t, si;
    printf("Enter Principal: ");
    scanf("%f", &p);
    printf("Enter Rate: ");
    scanf("%f", &r);
    printf("Enter Time (years): ");
    scanf("%f", &t);
    si = (p * r * t) / 100;
    printf("Simple Interest: %.2f", si);
    return 0;
}

#include <stdio.h>
int main() {
    int units;
    float bill;
    printf("Enter units consumed: ");
    scanf("%d", &units);

    if (units <= 100) {
        bill = units * 6.50;
    } else {
        int extra = units - 100;
        bill = (100 * 6.50) + (extra * 9.00);
    }

    printf("Electricity Bill = %.2f Rs", bill);
    return 0;
}

#include <stdio.h>
int main() {
    int age;
    printf("Enter your age: ");
    scanf("%d", &age);

    if (age >= 18) {
        printf("You are eligible to vote.");
    } else {
        printf("You are not eligible to vote.");
    }
    return 0;
}