The code provided is a frequency counter coded in C, and is designed to compile in:

gcc -std=c99 -Wall -pedantic -o filename filename.c With no warnings or Errors.

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THE PROBLEM CONTAINS TWO PARTS:

1. Use the provided code for a frequency counter coded in C, to rearrange the code into 3 distinct files:

freq.c - just main and no other functions func.c - Contains additional functions that are not main() func.h - Contains prototype code for functions in func.c . Must be included from both freq.c and func.c . Include #ifndef to prevent multiple inclusion from occuring.

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2. Provide a Makefile which provides the following:

-A default rule which **ONLY** compiles program to an executable named freq

-A clean rule which deletes .o files and executable file

-A run rule which will compile and run the program

The provided code:

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#include #include

//methdo which return the index if word exists in array else -1

int existsIndex(char arr[201][25], char word[25], int count[201], int size)

{

//start from 0

for (int i = 0; i < size; i++)

{

if (strcmp(arr[i], word) == 0)

return i;

}

return -1;

}

//main driver code of the program

int main()

{

//it is said that there will be nomore than 200 unique words

//so create a aray of 200 size ,

//the count array wills store the respective count

char arr[201][25];

int count[201] = {0};

//run an indefinite loop

//this will exit when user enters zzzzz

char user_inp[25];

int size = 0;

while (1)

{

//get user input

scanf("%s", user_inp);

//compare suer inp

if (strcmp(user_inp, "zzzzz") == 0)

{

//exit from loop

break;

}

size++;

//else check if strign exists ,

int ind = existsIndex(arr, user_inp, count, size);

if (ind != -1)

{

//increase the count

count[ind] += 1;

}

else

{

//add the string

strcpy(arr[size - 1], user_inp);

count[size - 1] = 1;

}

}

//now sort the count array and also the arr along with it

for (int i = 0; i < size - 1; i++)

{

for (int j = 0; j < size - i - 1; j++)

{

if (count[j] < count[j + 1])

{

int t = count[j];

count[j] = count[j + 1];

count[j + 1] = t;

char te[25];

strcpy(te, arr[j]);

strcpy(arr[j], arr[j + 1]);

strcpy(arr[j + 1], te);

}

}

}

//finally display the top 5

printf("Count Word ");

printf("====== ====== ");

for (int i = 0; i < (5 < size ? 5 : size); i++)

{

printf("%d %12s ", count[i], arr[i]);

}

}