How to input the verification code? You need to use C language.

# include & ltstring.h & gt

Master ()

{

char a[ 15]，I = 3；

Do {

printf(" Password:")；

Get (a);

if(strcmp(a，" hello ")= = 0)break； //Please connect to your password file here or connect to the database for verification. This is hello.

} while(-I)；

if(i==0) printf("Input errer 3 num。 System shut down! \ n ")；

other

{

//Write down the code to be executed with the correct password here.

}

}