C Programming: Find the number of times the word 'the' in any combination appears

C String: Exercise-16 with Solution

Write a program in C to find the number of times a given word 'the' appears in the given string.

Sample Solution:

C Code:

#include <stdio.h>
#include <string.h>
void main()
{
	int ctr=0,i,freq=0;
        int t,h,e,spc;
	char str[100];
	
	
       printf("\n\nFind the number of times the word 'the ' in any combination appears :\n");
       printf("----------------------------------------------------------------------\n");	

	printf("Input the string : ");
	fgets(str,sizeof str,stdin);

        ctr=strlen(str);

	/*Counts the frequency of the word 'the' with a trailing space*/
	for(i=0;i<=ctr-3;i++)
	{
		t=(str[i]=='t'||str[i]=='T');
		h=(str[i+1]=='h'||str[i+1]=='H');
		e=(str[i+2]=='e'||str[i+2]=='E');
		spc=(str[i+3]==' '||str[i+3]=='\0');
		if ((t&&h&&e&&spc)==1)
		   freq++;
	}
	printf("The frequency of the word \'the\' is : %d\n\n",freq);
}

Sample Output:

Find the number of times the word 'the ' in any combination appears :                                                         
----------------------------------------------------------------------                                                        
Input the string : The stering where the word the present more then onces.                                                     
The frequency of the word 'the' is : 3 

Flowchart :

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