/in/foo.cc: In function 'bool isleap(int)':
/in/foo.cc:6:14: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(n%4==0&&n%100!=0||n%400==0) return true;
        ~~~~~~^~~~~~~~~~
/in/foo.cc: At global scope:
/in/foo.cc:34:1: error: 'Copy' does not name a type
 Copy
 ^~~~