Program to perform Comparisons of Two Strings

#include <iostream.h>
#include <conio.h>
#include<stdio.h>
int compare (int i,char str1[],char str2[]);
void main ( )
{
       int i , j , count = 0 ;
       char str1[40],str2[40] ;
       for (i=0 ; i<40 ; i++)
       {
           str1[i] = '\0' ;
           str2[i] = '\0' ;
       }
       puts ("Enter the first string :") ;
       gets (str1);
       puts ("\nEnter the second string :") ;
       gets (str2);
       count = compare (i,str1,str2);
       if ( (str1[count] == '\0')&&(str2[count]=='\0'))
        puts ("\nThe two strings are equal.") ;
       else
        puts ("\nThe two strings are unequal.") ;
       getch ( ) ;
}
    int compare (int i,char str1[],char str2[])
    {
       i = 0 ;
       while ((str1[i]==str2[i])&&(str1[i]!='\0')&&(str2!='\0'))
          ++i ;
          return (i) ;
    }