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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int upc[12];
  5.  
  6.     for (int i = 0; i < 12; i++) {
  7.         scanf("%d", &upc[i]);
  8.     }
  9.  
  10.     int odd_sum = 0;
  11.     for (int i = 0; i < 11; i += 2) {
  12.         odd_sum += upc[i];
  13.     }
  14.     int step1 = odd_sum * 3;
  15.  
  16.     int even_sum = 0;
  17.     for (int i = 1; i < 10; i += 2) {
  18.         even_sum += upc[i];
  19.     }
  20.     int step2 = step1 + even_sum;
  21.  
  22.     int last_digit = step2 % 10;
  23.     int check_digit;
  24.     if (last_digit == 0) {
  25.         check_digit = 0;
  26.     } else {
  27.         check_digit = 10 - last_digit;
  28.     }
  29.  
  30.     printf("\nHasil Langkah 1 : %d\n", step1);
  31.     printf("Hasil Langkah 2 : %d\n", step2);
  32.     printf("Check Digit Hitungan : %d\n", check_digit);
  33.     printf("Check Digit Barcode  : %d\n\n", upc[11]);
  34.  
  35.     for (int i = 0; i < 12; i++) {
  36.         printf("%d ", upc[i]);
  37.     }
  38.  
  39.     if (check_digit == upc[11]) {
  40.         printf("benar\n");
  41.     } else {
  42.         printf("salah\n");
  43.     }
  44.  
  45.     return 0;
  46. }
Success #stdin #stdout 0s 5320KB
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stdin
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Standard input is empty
stdout
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Hasil Langkah 1 : -1286020327
Hasil Langkah 2 : -1285982217
Check Digit Hitungan : 17
Check Digit Barcode  : 22043

194 0 -140264330 32766 1 0 -1637618859 5344 0 0 -1514101979 22043 salah
https://ideone.com/u4JsGC
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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