Oct 20, 2011

C Program to count the occurence of perticular word in the string

C Program that counts the particular word in the given string. For example in the string " the string is the set of charterers" , Number of occurance of "the" is:2. Read more about C Programming Language .

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#include<stdio.h>

#include<string.h>

main()

{

 int strln,wordln,i,j,k,flag,count=0;

 char str[200],word[20];

 printf("Enter line of text:\n");

 gets(str);

 printf("Enter the word to count:\n");

 scanf("%s",word);

 strln=strlen(str);

 wordln=strlen(word);

 for(i=0;i<strln;i++)

 {

  if(str[i]==word[0]&&((str[i-1]==' '||i==0)&&(str[i+wordln]==' '||str[i+wordln]=='\0')))

  {

   for(flag=0,k=i+1,j=1;j<wordln;j++,k++)

   {

    if(str[k]==word[j])

    {

     flag++;

    }

   }

   if(flag==wordln-1)

   {

    count++;

   }

  }

 }

 printf("Number of occurence of '%s' = %d\n",word,count);

}

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