Joke Collection Website - Public benefit messages - C language generates a random verification code (a combination of four random letters and numbers), which requires the user to input and gives a prompt of input dislocation with inconsistent length.

C language generates a random verification code (a combination of four random letters and numbers), which requires the user to input and gives a prompt of input dislocation with inconsistent length.

# Contains? & ltbits/stdc++。 h & gt

Use? Namespace? std

Charles? a[233]，ST[233]；

int？ getnum(int？ num){

What if? (num & lt26)? return(' a '+num)； other

Return(' 0 '+ number-26);

}

int？ main(){

srand(time(0))；

For what? (int？ I = 1； I < = 4; i++)？ printf("%c "，a[I]= getnum(rand()% 36))； printf(" \ n ")；

scanf("%s "，& ampST)；

What if? (strlen(st)！ =4)? {printf ("Wrong? Length \ n "); return(0)； }

For what? (int？ I = 0； I<4; i++)

? What if? (st[i]！ =a[i+ 1]){

Printf ("Different? Where is it? %d”，I+ 1)；

return(0)；

? }

printf(" RIGHT \ n ")；

}