foo.c: In function 'main':
foo.c:22:23: error: expected ')' before string constant
   22 |     printf("\n%d\n", b "\n%d\n", 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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