java adding program: two consecutive zeroes would cause the total of all the values input to be printed and the program to be terminated -

i want make program work on 0-0 case. when input 0,it show subtotal 0 first, , need input 0 display total 0, in program, when input 0, show total 0.(a 0 value cause subtotal printed , reset zero)

class adding{     public static void main(string[] args){         scanner input = new scanner(system.in);         int subtotal = 0;         int total = 0;          while(true){             while(true){                 int number = input.nextint();                  if(number == 0)break;                 subtotal = subtotal + number;             }             total = total + subtotal;             if(subtotal != 0){                 system.out.println("subtotal: " + subtotal);                 subtotal = 0;             }else{                 system.out.println("total: " + total);                 break;             }         }     } } 

it happening because of condition subtotal!=0. when enter 0 first input, subtotal 0. skip printing subtotal:0 , directly prints total:0. keep track or number of inputs have read. if subtotal!=0 or if first input, print subtotal.

so have added numbersread keep track of number of characters read. (you can simple boolean).

change code this:

class adding{     public static void main(string[] args){         scanner input = new scanner(system.in);         int subtotal = 0;         int total = 0;          int numbersread=0;         while(true){             while(true){                 int number = input.nextint();                 numbersread++;                 if(number == 0)break;                 subtotal = subtotal + number;             }             total = total + subtotal;             if(subtotal != 0 || numbersread == 1){                 system.out.println("subtotal: " + subtotal);                 subtotal = 0;             }else{                 system.out.println("total: " + total);                 break;             }         }     } }