/in/foo.cc: In function 'int main()':
/in/foo.cc:7:8: error: expected ';' before 'a'
    cin a;
        ^
/in/foo.cc:7:9: warning: statement has no effect [-Wunused-value]
    cin a;
         ^
/in/foo.cc:8:11: error: expected ';' before ')' token
    for(b<a)
           ^
/in/foo.cc:8:9: warning: statement has no effect [-Wunused-value]
    for(b<a)
        ~^~
/in/foo.cc:13:1: error: expected primary-expression before '}' token
 }
 ^
/in/foo.cc:13:1: error: expected ';' before '}' token
/in/foo.cc:13:1: error: expected primary-expression before '}' token
/in/foo.cc:13:1: error: expected ')' before '}' token
/in/foo.cc:13:1: error: expected primary-expression before '}' token