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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int a, b, c;
  5. a=10, b=10;
  6. c=--a+(++b);
  7. printf("%d", c);
  8. return 0;
  9. }
  10.  
Success #stdin #stdout 0s 2248KB
stdin
Standard input is empty
stdout
20