Write a C program to verify the string 0(0|1)*0 | 1(0|1)*0

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

          char str[20];

          int i,len;

          clrscr();

          printf("\n Enter the String:-");

          gets(str);

          len=strlen(str)-1;

          if((str[0]=='0' && str[len]=='0')) printf("\n Validddd.....");

          else if(str[0]=='1' && str[len]=='0')

                   printf("\n Validddd.....");

          else

                   printf("\n INValid String");

  getch();}