foo.c: In function 'main':
foo.c:8:17: error: expected ';' before '}' token
    8 |         return 0
      |                 ^
      |                 ;
    9 | }
      | ~                
foo.c:5:20: warning: variable 'sum' set but not used [-Wunused-but-set-variable]
    5 |     float a, b, c, sum;
      |                    ^~~

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