C program to count occurrence of a word in a string - My CS Tutorial

C program to count or find occurrence of a substring in a string.
In this tutorial we will discuss to write a c program that count the occurrence of a word in a string.
In this program firstly user enter a string in which minimum one word is repeate more than one times.
Then the user enter a substring or a word than the compiler print the occurrence of that word.
Occurrence is numbers of repetenc of a word or substring.

Source Code

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

 int sublen,len,i,count=0;

 char str[100],subst[30],tempst[30];

 clrscr();

 printf("\n ENTER A STRING OR SENTENCE:\n ");

 gets(str);

 printf("\n ENTER A SUBSTRING TO FIND OCCURANCES:\n ");

 gets(subst);

 len=strlen(str);

 sublen=strlen(subst);

 if(len>=sublen)

 {

  for(i=0;i<len;i++)

  {

   strncpy(tempst,str+i,sublen);

   

   tempst[sublen]='\0';

   

   if(strcmp(subst,tempst)==0)

   

       count++;

  }

  

  printf("\n GIVEN SUBSTRING OCCURED %d TIMES:\n ",count);

 }

 else

 {

  printf("\n ENTERED SUBSTRING IS MORE THEN GIVEN STRING:\n ");

 }

getch();

}

OUTPUT:

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Created by-- HARSH CHAUHAN