View Compilation Error

0_0_30141415_4980.cpp: In function 'int main()':
0_0_30141415_4980.cpp:12:3: error: expected ';' before 'if'
   if ((y%400==0) || (y%4==0 && y%100!=0)) // 闰年
   ^
0_0_30141415_4980.cpp:16:3: error: 'else' without a previous 'if'
   else
   ^
0_0_30141415_4980.cpp:20:3: error: 'ans' was not declared in this scope
   ans = d + mon[m-1];
   ^