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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int i = 0;
  5. ++i++;
  6. return i;
  7. }
  8.  
Compilation error #stdin compilation error #stdout 0s 0KB
stdin
Standard input is empty
compilation info
prog.c: In function ‘main’:
prog.c:5:2: error: lvalue required as increment operand
  ++i++;
  ^
stdout
Standard output is empty