/*
12345
1 + 2 + 3 + 4 + 5 = 15
=> 5 nút
so_1 = 12345 % 10 = 5
12345 / 10 = 1234
so_2 = 1234 % 10 = 4
1234 / 10 = 123
so_3 = 123 % 10 = 3
123 / 10 = 12
so_4 = 12 % 10 = 2
12 / 10 = 1
so_5 = 1 % 10 = 1
1 / 10 = 0 => END
*/
#include <stdio.h>
#include <conio.h>
int main(){
unsigned int SoXe;
printf("\nNhap vao so xe: ");
scanf_s("%u", &SoXe);
int SoNut = SoXe % 10;
SoXe /= 10;
SoNut += SoXe % 10;
SoXe /= 10;
SoNut += SoXe % 10;
SoXe /= 10;
SoNut += SoXe % 10;
SoXe /= 10;
SoNut += SoXe % 10;
SoXe /= 10;
SoNut %= 10;
printf("\nSo nut = %d", SoNut);
_getch();
return 0;
}