/in/foo.cc:2:11: error: '::main' must return 'int'
 void main()
           ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:10:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   if(i==2||i==8)
   ^~
/in/foo.cc:16:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
    printf("\n");
    ^~~~~~