Multiple C programming exercises in a single project

/*
 ============================================================================
 Name        : main.c
 Author      : Michael Park
 Version     : 1.0
 Copyright   : Copyright Notice Here (2013)
 Description : Multiple C programming exercises in a single project
 ============================================================================
 */

#include <stdio.h>

void hello()
{
    puts("Hello, World!");
}
void ex1()
{
    puts("Run exercise 1");
}
void ex2()
{
    puts("Run exercise 2");
}
void ex3()
{
    puts("Run exercise 3");
}
void ex4()
{
    puts("Run exercise 4");
}
void ex5()
{
    puts("Run exercise 5");
}
void ex6()
{
    puts("Run exercise 6");
}
void ex7()
{
    puts("Run exercise 7");
}
void ex8()
{
    puts("Run exercise 8");
}

int main()
{
    int choice;

    puts( "Choose an exercise between 0 and 8 (0 is Hello, World!):" );
    scanf( "%d", &choice );
    switch ( choice ) {
        case 0:
            hello();
            break;
        case 1:
            ex1();
            break;
        case 2:
            ex2();
            break;
        case 3:
            ex3();
            break;
        case 4:
            ex4();
            break;
        case 5:
            ex5();
            break;
        case 6:
            ex6();
            break;
        case 7:
            ex7();
            break;
        case 8:
            ex8();
            break;
        default:
            puts( "Please enter a number between 0 and 8!" );
            break;
    }
    getchar();
}