Frequency of Substring in the c

Count Number of Words in a given Text Or Sentence

#include 

#include 

#include 

void main()

{

    char s[200];

    int count = 0, i;

    printf("enter the string\n");

    scanf("%[^\n]s", s);

    for (i = 0;s[i] != '\0';i++)

    {

        if (s[i] == ' ')

            count++;    

    }

    printf("number of words in given string are: %d\n", count + 1);

    getch();

}

Output

enter the string

welcome to sanfoundry's c-programming class!

number of words in given string are: 5

Find the Frequency of Substring in the given String

#include 

#include 

#include 

void main()

{

    int count = 0, i, j = 0, k;

    char str[100], str1[20];

    clrscr();

    printf("Enter the string\n");

    scanf(" %[^\n]s", str);

    printf("Enter the substring to be matched\n");

    scanf(" %[^\n]s", str1);

    k = strlen(str1);

    for (i = 0;str[i] != '\0';)

    {

        if (str[i] == ' ')

        {

            i++;

        }

        else

        {

            if (str[i] == str1[j])

            {

                j++;

                i++;

            }

            else if (j == k)

            {

                j = 0;

                count++;

                i--;

            }

            else

            {

                i++;

                j = 0;

            }

        }

    }

    printf("No of matches of substring in main string is %d\n", count);

getch();

}

Output

Enter the string

prrrogram is prrrogramming

Enter the substring to be matched

rr

No of matches of substring in main string is 4