foo.cc: In function 'int main()':
foo.cc:8:12: error: expected ';' before 'i'
    8 |         s=1
      |            ^
      |            ;
    9 |         i=1
      |         ~   
foo.cc:16:17: error: expected ';' before '}' token
   16 |         return 0
      |                 ^
      |                 ;
   17 | }
      | ~                
foo.cc:6:15: warning: unused variable 'i' [-Wunused-variable]
    6 |         int n,i;
      |               ^

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