doWhile in C

Question

Hi guys, I'm beginner in C and im doing some exercise I create to experiment...I can't figure out what's worng in this code can someonr pls help? thank u guys and forgive my English

#include studio.h
int main();{

int firstCard;
int secondCard;
int booJack = 21;
int result;
do{
printf("What's your numbers? ");
  scanf("%d",&firstCard);
  scanf("%d",&secondCard);
  result = firstCard+secondCard;
  printf("Better luck next time!");
}while(result == booJack);
printf("21!BOOJACK!\nYOU WIN!");

return 0;}

Answer 1

you might mean black jack mister ,
in Integer case 2 + 1 is 3 ,
in String case "2" + "1" is "21" , it can be "1" + "2" either become "12".

in your code you ask program to keep asking until total of sum are NOT 21 , in other word , while total sum of (15 + 6) or (10 + 11) or (8 + 13) or (so on) are 21 , it loops question.

it does run program once because you asking it to do something regardless , then check condition after input.

variable case.

try to find out about String concatenation.

Answer 2

first, my I don't wear a cap on my head, second, main reason must be fix at declared line

Answer 3

yes I want exit loop only of sum is 21

Answer 4

You want fix your code so that it can run, follow my previous post and see if it work

Answer 5

then try :

while ( result != 21 ){
};

//or

do{
}while( result != 21 );

instead.