Main.cc: In function 'int main()':
Main.cc:6:15: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
if(year%4==0 && year%100!=0||year%==0) {
^
Main.cc:6:37: error: expected primary-expression before '=' token
if(year%4==0 && year%100!=0||year%==0) {
^