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  1. #include <setjmp.h>
  2. #include <stdio.h>
  3.  
  4. jmp_buf x;
  5.  
  6. void f()
  7. {
  8.   longjmp(x,5);
  9. }
  10.  
  11. int main()
  12. {
  13.   int i = 0;
  14.  
  15.   if ((i = setjmp(x)) == 0)
  16.   {
  17.     f();
  18.   }
  19.   else
  20.   {
  21.     switch(i)
  22.     {
  23.       case  1: /* ... */ break;
  24.       case  2: /* ... */ break;
  25.       default: fprintf(stdout, "error code = %d\n", i); break;
  26.     }
  27.   }
  28.   return 0;
  29. }
Success #stdin #stdout 0s 3096KB
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stdin
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Standard input is empty
stdout
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error code = 5
https://ideone.com/KyqRZE
Advanced CPP: Exceptions
setjump/longjump
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
secret

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