/*
 *  C program to accept a string and find the number of times the word
 * 'the' appears in that string
 */
#include <stdio.h>

void main()
{
    int count = 0, i, times = 0, t, h, e, space;
    char string[100];
    puts("Enter a string:");
    gets(string);
    /*   Traverse the string to count the number of characters */
    while (string[count] != '\0')
        {
            count++;
        }
    /*   Finding the frequency of the word 'the' */
    for (i = 0; i <= count - 3; i++)
        {
            t =(string[i] == 't' || string[i] == 'T');
            h =(string[i + 1] == 'h' || string[i + 1] == 'H');
            e =(string[i + 2] == 'e'|| string[i + 2] == 'E');
            space =(string[i + 3] == ' ' || string[i + 3] == '\0');
            if ((t && h && e && space) == 1)
                times++;
        }
    printf("Frequency of the word 'the' is %d\n", times);
}
/*
*OUTPUT:
Enter a string:
The gandhi jayanthi is celeberated on october 2 is the day
that he has born.
Frequency of the word 'the' is 2
*/