C program for compare two string

SOURCE CODE:
#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{
 int c,flag=0,i;
 char a[25],b[25];
 clrscr();
 printf("Enter first string\n");
 gets(a);
 printf("Enter second string\n");
 gets(b);
// c=strcmp(a,b);
 while(a[i]!='\0'&&b[i]!='\0')
 {
 if(a[i]==b[i])
 {
  i++;
  flag=1;
 }
 else
 {
  printf("string are not same");
  flag=0;
  break;
 }
 }
 if(flag==1)
 {
  print("string are same");
 }
 getch();
}