/in/foo.c: In function 'main':
/in/foo.c:7:11: warning: too many arguments for format [-Wformat-extra-args]
     scanf("&d &d",&year,&month);
           ^~~~~~~
/in/foo.c:16:8: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
        if(month=2){
        ^~