foo.c: In function 'main':
foo.c:7:21: error: expected ';' before '}' token
    7 |         {t=a;a=b;b=t}
      |                     ^
      |                     ;
foo.c:9:21: error: expected ';' before '}' token
    9 |         {t=a;a=c;c=t}
      |                     ^
      |                     ;
foo.c:11:21: error: expected ';' before '}' token
   11 |         {t=b;b=c;c=t}
      |                     ^
      |                     ;
foo.c:12:30: error: request for member 'b' in something not a structure or union
   12 |         printf("%d,%d,%d\n",a.b.c);
      |                              ^
foo.c:13:17: error: expected ';' before '}' token
   13 |         return 0
      |                 ^
      |                 ;
   14 | }
      | ~                

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