Write a C Program which demonstrates the use of an array of pointers and has functions to do the following:

Question

Consider the 12 words below. Write a C Program which demonstrates the use of an array of pointers and has functions to do the following: 

1. Jumble the order of words
2. Print the words
3. Select a random word

"COMP10120" "is" "my" "favourite" "module" "and" "I" "learn" "lots" "of" "interesting" "things"

Extra: Include appropriate print outs to demonstrate the functionality of the program.

Answer 1

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#define STR_SIZE (25)

int Menu()

{

int iReturn=-1;

while ((iReturn<0) || (iReturn>3))

{

printf("********************************\n");

printf(" <1> SCRAMBLE THE WORDS \n");

printf(" <2> RANDOMLY SELECT WORDS \n");

printf(" <3> ORIGINAL WORD LIST \n");

printf("*********************************\n");

printf(" INPUT SELECTION OR ZER0 to QUIT :>");

scanf("%d",&iReturn);

}

return(iReturn);

}

void OutputWords(char ** A, int n, char * msgStr)

{

int iLoop;

if (msgStr!=NULL)

{

printf("*******************************************\n");

printf(msgStr); printf("\n");

}

printf("*********************************************\n");

for (iLoop=0; iLoop<n; iLoop++)

{

printf(">%s< \n",A[iLoop]);

}

}

Scramble(char ** A, int n)

{

char tempWord[STR_SIZE];

int iLoop;

int strLen;

int iRandomIndex;

for (iLoop=0; iLoop<n; iLoop++)

{

iRandomIndex = rand()%n;

strcpy(tempWord,A[iLoop]);

strcpy(A[iLoop],A[iRandomIndex]);

strcpy(A[iRandomIndex],tempWord);

}

}

Go()

{

char * _words[] = {(char*)"COMP10120",

(char*)"is",

(char*)"my",

(char*)"favorite",

(char*)"module",

(char*)"and",

(char*)"I",

(char*)"learn",

(char*)"lots",

(char*)"of",

(char*)"interesting",

(char*)"things"};

char * words[12];

char Words[12][STR_SIZE];

char * copyWords[12];

char CopyWords[12][STR_SIZE];

int iLoop=0;

for (iLoop=0; iLoop<12; iLoop++)

{

strcpy(Words[iLoop],_words[iLoop]);

strcpy(CopyWords[iLoop],_words[iLoop]);

words[iLoop] = Words[iLoop];

copyWords[iLoop]=CopyWords[iLoop];

}

OutputWords(words,12, (char*)" The original words are: ");

int menuReturn = -1;

while ((menuReturn= Menu()) != 0)

{

switch (menuReturn)

{

case 1:

{

Scramble(copyWords,12);

OutputWords(copyWords,12, (char*)"Scrambled Words");

break;

}

case 2:

{

int iRandomIndex = rand()%12;

printf(" Random word at index position %d is >%s< \n",iRandomIndex,words[iRandomIndex]);

break;

}

case 3:

{

OutputWords(words,12, (char*)" The original words are: \n");

break;

}

}//switch

} //while

}

int main()

{

Go();

}