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  1. #include <stdio.h>
  2.  
  3.  
  4. void test(int i) {
  5.     printf("%d is ", i);
  6.     do {
  7.         void * jump_table[] = {
  8.             &&branch_default, &&branch_1,
  9.             &&branch_default, &&branch_default,
  10.             &&branch_default, &&branch_5,
  11.             &&branch_default, &&branch_default,
  12.             &&branch_8, &&branch_default
  13.         };
  14.         if (i < 0 || i >= 10)
  15.             goto branch_default;
  16.         goto *jump_table[i];
  17.     branch_default:
  18.         printf("default\n");
  19.         break;
  20.     branch_1:
  21.         printf("one!\n");
  22.         break;
  23.     branch_5:
  24.         printf("five!\n");
  25.         break;
  26.     branch_8:
  27.         printf("eight!\n");
  28.         break;
  29.     } while (0);
  30. }
  31.  
  32.  
  33. int main() {
  34.     int i;
  35.     for (i=-1; i<12; i++) {
  36.         test(i);
  37.     }
  38.     return 0;
  39. }
Success #stdin #stdout 0s 2248KB
comments (?)
stdin
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Standard input is empty
stdout
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-1 is default
0 is default
1 is one!
2 is default
3 is default
4 is default
5 is five!
6 is default
7 is default
8 is eight!
9 is default
10 is default
11 is default
https://ideone.com/tWcQmK
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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