find a word in asentencce

#include<conio.h>
#include<iostream.h>
#include<stdio.h>
#include<string.h>
void main ()
{
 clrscr();
 char a[100] , b[10],c[10];
 int counter = 0;
 cout<<"please enter a string : ";
 gets(a);
 cout<<"please enter a word to look for : ";
 gets(b);
 for(int i = 0 ; i<strlen(a);i++){
  for(int j = 0 ; a[i]!=' ' && a[i]!='\0' ; i++,j++)
   c[j] = a[i];
   c[j] ='\0';
   if(strcmp(c,b)==0)
   counter++;
 }
 cout<<endl<<"the number of times the is "<<counter;
 getch();
}