codeblocks, c code, using only stdio.h and string.h Question 1: Write a function

Question

codeblocks, c code, using only stdio.h and string.h

Question 1:

Write a function hydroxide that returns 1 for true if its string argument ends in the substring OH.

Question 2:

Write a program that takes nouns and forms their plurals based on these rules:

1. If noun ends in "y" remove the "y" and add "ies".

2. if noun ends in "s" , "ch", or "sh", add "es"

3. in all other cases, just add "s".

Question 3:

Write a function that finds and returns through an output parameter the longest common suffix of two words.

Explanation / Answer

Question 1:

#include <stdio.h>

#include <stdlib.h>

#include <malloc.h>

#define FALSE 0

#define TRUE 1

/*Function: isHydroxide

Purpose: determine if input string ends in oh or OH

Arguments: none

Returns: TRUE or FALSE */

int isHydroxide(char* str, int size);

int isHydroxide(char* str, int size)

{

    //checks that it ends in OH or oh

    if(str[size] == 0x4F || str[size] == 0x6F)

        if(str[size - 2] == 0x48 || str[size - 1] == 0x68)

            return TRUE; //if it contains OH

    return FALSE; //if it does not contain OH

}

/*Function: main

Purpose: determine if compound ends in oh or OH

Arguments: none

Returns: string, 0 upon completion*/

int main (int argc, char **argv)

    {

        char *input = (char *)malloc(512); //allocate memory for string

            int i = 0;

                printf(" Enter a chemical compound: ");   

                scanf("%s", input); //get string input

            //Finds the length of the array minus 1

            while(input[i] != '')

                i ++;

            if(isHydroxide(input, i))

                printf(" The compound %s is a hydroxide ", input);

            else

                printf(" The compound %s is not a hydroxide ", input);

            return 0;

    }

Question 2:

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

#define MAX_WORD 50

/* prototypes */
void pluralize (char word[]);

int main (void) {
  
  /* declarations */
char temp_word[MAX_WORD];   /* stores temporary word entered by user */
  
  /* prompt user to enter noun */
printf("This program prints the plural form of a noun. ");
printf("Please type in a noun in singular form: ");
scanf("%s", temp_word);

  while (strcmp(temp_word, "done") != 0) {
  
    /* convert noun into plural form */
    pluralize (temp_word);

    /* print the plural form of the word */
    printf("The plural form is %s ", temp_word);

    /* prompt user to enter noun */
    printf("Please type in a noun in singular form: ");
    scanf("%s", temp_word);
  
}

  /* return successfully */
return 0;
}

/* pluralize
* parameters: char word[]
* return values: none, but word[] will be changed through this function
* functionality: changes word[] to be the plural form of word[]
*/

void pluralize (char word[]){
  
  /* declarations */
int length;

  /* find length of word */
length = strlen(word);

  /* check first rule: if word ends in "y" then change to "ies" */
  if (word[length - 1] == 'y') {
    word[length - 1] = 'i';
    word[length] = 'e';
    word[length + 1] = 's';
    word[length + 2] = '';   /* remember to put '' at end of string */
}
  
  /* check second rule: if word ends in "s" "ch" or "sh" add "es" */
  else if (word[length - 1] == 's' ||
    (word[length - 2] == 'c' && word[length - 1] == 'h') ||
    (word[length - 2] == 's' && word[length - 1] == 'h')){
    /* concatenate "es" to word */
    strcat(word, "es");
}

  /* otherwise, just add "s" to the end of word */
  else {
    strcat(word, "s");
}
}

Question 3:

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