/in/foo.c: In function 'main':
/in/foo.c:37:14: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
            if(year==x)
              ^
/in/foo.c: In function 'Day':
/in/foo.c:63:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^