Program to reads a text and count occurrences of a particular word

#include<stdio.h>
#include<conio.h>
#include<string.h>

void main()
{
int i=0,j=0,count=0;
char str1[30],str2[10],str3[20];
clrscr();
printf("\n Enter your text : ");
gets(str1);

printf("\n Enter word to count : ");
gets(str2);

while(str1[i]!='\0')
{
while(str1[i]!=' '&&str1[i]!='\0')    //copying the word
str3[j++]=str1[i++];

str3[j]='\0';    //assigning null character at the end of string
j=0;

if((strcmpi(str2,str3))==0)    //comparing the given word
count++;

if(str1[i]=='\0')
break;
else
i++;
}

printf("\n Number of words are : %d",count);
getch();
}


                                                            Output