foo.c: In function 'main':
foo.c:6:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'int'
    6 |         int c[a]
      |         ^~~
foo.c:12:22: error: 'c' undeclared (first use in this function)
   12 |         {scanf("%d",&c);
      |                      ^
foo.c:12:22: note: each undeclared identifier is reported only once for each function it appears in
foo.c:17:1: error: expected expression before '}' token
   17 | }
      | ^
foo.c:17:1: error: expected declaration or statement at end of input

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