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  1. main(a) {
  2. if (!a) {
  3. a = 1;
  4. } else {
  5. a = 2;
  6. }{
  7. int a = 0;
  8. printf("%d\n", a); //undefined
  9.  
  10. if (!a) {
  11. a = 1;
  12. } else {
  13. a = 2;
  14. }{
  15. int a;
  16. printf("%d\n", a); //1
  17. }}}
Success #stdin #stdout 0s 4480KB
stdin
Standard input is empty
stdout
0
0