foo.c:2:11: error: expected declaration specifiers or '...' before string constant
    2 |     scanf("3 5");
      |           ^~~~~
foo.c: In function 'main':
foo.c:5:23: error: expected ';' before '}' token
    5 |     printf("8\n15\n3")
      |                       ^
      |                       ;
    6 | }
      | ~                      

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