Pointers Week 14

// Week 14 Pointers.cpp : Defines the entry point for the console application.
//

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

void charAddresses(char *string); // 1st function to do
void commaToSpace(char *str); // 2nd function to do
void printWord(char *start); //3rd function to do
char *nextWord(char *start); // 4th function to do


void main()
{
    int i = 0;
    char location[200] = "7825,CREEK VALLEY,SACRAMENTO,95828,CA";


    char *ptr;

    // 1. call function to print out the address and content of each character in the input array
    charAddresses(location);

    // 2. call function to replace all the commas in the input string with tabs
    commaToSpace(location);

    puts("Without commas:");
    puts(location);
    puts("");

    // 3. instead of printing characters (using putchar) until a '\0', printWord prints characters until a space ' '
    puts("First Word");
    printWord(location);

    puts("Second Word");
    printWord(location + 5);

    puts("Third Word");
    printWord(location + 11);
    puts("");

    // starting from the first character in the input string, each call to "nextWord" should return the next word in the string
    // e.g. if the input string is "Hi there everyone" :
    // first call to nextWord should return the address of the letter 't' of "there"
    // second call to nextWord should return the address of the first letter 'e'of "everyone"
    // third call to nextWord should return NULL
    ptr = location;
    while (ptr)
    {
        // instead of printing characters (using putchar) until a '\0', printWord prints characters until a space ' '
        printWord(ptr);
        printf("\n");
        ptr = nextWord(ptr);
    }
}

void charAddresses(char *string)
{
    // insert your code here
    int stringLenght = strlen(string);
    for (int i = 0; i<stringLenght; i++)
    {
        printf("Adress: %p   Content: %c   \n", &string[i], string[i]);
    }

}
void commaToSpace(char *str)
{
    // insert your code here
    int stringLenght = strlen(str);
    for (int i = 0; i<stringLenght; i++)
    {
        if (str[i] == ',')
        {
            str[i] = ' ';
        }
    }


}

void printWord(char *start)
{
    // insert your code here

    while (*start != ' ')
    {
        printf("%c", *start);
        start++;
    }
    printf("\n");
}

char *nextWord(char *start)
{
    // insert your code here
    // of course it should only return NULL if there are no more words
    // HINT: 'return (start+i)' will return member [i] of the array (string) pointed at by 'start'

    for (int i = 5; i<strlen(start); i++)
    {
        if (start[i] == ' ')
        {
            printf("\n\n");
            i++;
        }
        printf("%c", start[i]);
    }
    printf("\n");
    return NULL;
}
//by Jaroslaw Janas