#include <stdio.h>

int main() {
    /* declare a string of up to 30 characters (one needed for NULL) */
    char name [31];

    /* initialize a string - the compiler automatically gives
     * enough space for the characters and NULL terminator */
    char str [] = "Hello world!";

    /* print a string */
    printf("%s\n", str);

    /* read a string */
    printf("Enter your name: ");
    scanf("%s", name);

    return 0;
}