/*#include <stdio.h>

int main()
{
    int n;

    printf("enter a number between 1 and 7: ");
    scanf("%d", &n);

    switch(n)
    {
        case 1:
        printf("Monday\n");
        break;

        case 2:
        printf("Tuesday\n");
        break;

        case 3:
        printf("Wednesday\n");
        break;

        case 4:
        printf("Thursday\n");
        break;

        case 5:
        printf("Friday\n");
        break;

        case 6:
        printf("Saturday\n");
        break;

        case 7:
        printf("Sunday\n");
        break;

        default:
        printf("Invalid number!");
        break;
    }
    return 0;
}*/



/*#include <stdio.h>

int main()
{
    int num;

    printf("enter a numberbetween 0 to 9: ");
    scanf("%d", &num);

    switch(num)
    {
        case 0:
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
        case 6:
        case 7:
        case 8:
        case 9:
            switch(num % 2 == 0)
            {
                case 1:
                printf("%d is even\n", num);
                break;

                case 0:
                printf("%d is odd\n", num);
                break;
            }
        default:
        printf("Invalid number!");
        break;
    }
    return 0;
}*/



/*#include <stdio.h>

int main()
{
    int num;

    printf("enter a numberbetween 0 to 9: ");
    scanf("%d", &num);

    switch(num)
    {
        case 0:
        case 2:
        case 4:
        case 6:
        case 8:
        printf("%d is even", num);
        break;

        case 1:
        case 3:
        case 5:
        case 7:
        case 9:
        printf("%d is odd", num);
        break;

        default:
        printf("Invalid number!");
        break;
    }
    return 0;
}*/



/*#include <stdio.h>

void greet()
{
    printf("hello!");
}

int main()
{
    greet();
    return 0;
}*/



/*#include <stdio.h>

void downCount(int start)
{
    for(int i = start; i >= 0; --i)
    {
        printf("%d\n", i);
    }
}

int main()
{
    int start, end;

    printf("enter a start value: ");
    scanf("%d", &start);

    downCount(start);

    return 0;
}*/



/*#include <stdio.h>

int GetValidAge()
{
    int age;
    printf("Enter your age!: ");
    scanf("%d", &age);

    if(age < 0 || age > 130)
    {
        printf("Invalid age!");
    }
    return age;
}

int main()
{
    int age = GetValidAge();

    if(age < 18)
    {
        printf("You cant drink");
    }
    else
    {
        printf("You can drink");
    }
    return 0;
}*/



/*#include <stdio.h>

double sum(double num1, double num2)
{
    double add;

    add = num1 + num2;
    printf("%d", add);
    return add;
}

int main()
{
    double suma = sum(5, 10);
    printf("%d", suma);
    return 0;
}*/


#include <stdio.h>

void swap(int, int);

int main()
{
    int a, b;

    printf("Enter values for a and b\n");
    scanf("%d %d", &a, &b);

    printf("\n\nBefore swapping: a = %d and b = %d\n", a, b);

    swap(a, b);

    return 0;
}

void swap(int x, int y)
{
    int temp;

    temp = x;
    x    = y;
    y    = temp;

    printf("\nAfter swapping: a = %d and b = %d\n", x, y);
}