foo.c: In function 'main':
foo.c:22:24: error: expected ')' before 'd'
   22 |     printf("\n%d\n" , b d / b);
      |           ~            ^~
      |                        )
foo.c:5:18: warning: variable 'd' set but not used [-Wunused-but-set-variable]
    5 |     int a, b, c, d, e;
      |                  ^

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