/in/foo.cc: In function 'int main()':
/in/foo.cc:10:1: error: expected primary-expression before '}' token
 }
 ^
/in/foo.cc:14:1: error: expected primary-expression before '}' token
 }
 ^
/in/foo.cc:16:1: error: 'return0' was not declared in this scope
 return0;
 ^~~~~~~
/in/foo.cc:11:5: warning: unused variable 'k' [-Wunused-variable]
 int k,f;
     ^
/in/foo.cc:11:7: warning: unused variable 'f' [-Wunused-variable]
 int k,f;
       ^