Main.cc: In function 'int main()':
Main.cc:10:19: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
if((year%4==0 && year%100!=0 || year%400==0){
^
Main.cc:10:49: error: expected ')' before '{' token
if((year%4==0 && year%100!=0 || year%400==0){
^