// Lecture example for COMP1511/1911 Week 4 Thursday
// Some simple examples demonstrating how strings work in C 

#include <stdio.h>

#define MAX_LEN 100

void print_string(char s[]);

int main(void) {
    // What do these look like in memory
    char favourite_food[] = {'k', 'f', 'c', '\0'}; //What if we leave off '\0
    char favourite_drink[] = "kombucha"; // Includes the '\0' at the end for us 
    char favourite_book[MAX_LEN] = "Folk of the Faraway Tree"; 
    //favourite_book = "Folk of the Faraway Tree";

    // Can print out characters
    printf("%c\n",favourite_food[0]);
    printf("%c\n",favourite_drink[3]);

    // Can print out the whole string
    printf("%s\n", favourite_food);
    printf("%s\n", favourite_drink);
    printf("%s\n", favourite_book);
    
    
    favourite_drink[0] = 'Z';
    printf("%s\n", favourite_drink);
    favourite_drink[4] = '\0';
    printf("%s\n", favourite_drink);
    
    print_string(favourite_food);
    
    return 0;
}

// Our own version of printf("%s")
void print_string(char s[]) {
    int i = 0;
    while (s[i] != '\0') {
        printf("%c", s[i]);
        i++;
    }
}