abab乱写的c++(求月份天数)(有bug)

awawawawa 恭喜你 被骗了

才怪

#include <iostream> using namespace std;

int main() { int a,b,n,cnt=0,op; cin>>n>>b; a=n; while(a){ int w=a%10; a/=10; if(w%4==0){ if(b==2){ cout<<"29"; return 0; } } }

if(b==1||b==3||b==5||b==7||b==8||b==10||b==12){cout<<"31";return 0;}
else{
    cout<<"30";
    return 0;
    }

}