新手，求帮忙

多看书，用if else解决，不要做伸手党

#include"iostream.h"void main(){int a;cout<<"please input 0--100"<<endl;cin>>a;if(a>=90)cout<<"very good"<<endl;if(60<=a&&a<80)cout<<"pass"<<endl;if(80<=a&&a<90)cout<<"good"<<endl;if(a<60)cout<<"fail"<<endl;if(100<a&&a<=0)cout<<"error"<<endl;}

排版有点问题

#include"iostream.h"
void main()
{int a;cout<<"please input 0--100"<<endl;
cin>>a;
if(a>=90)
cout<<"very good"<<endl;
if(60<=a&&a<80)
cout<<"pass"<<endl;
if(80<=a&&a<90)
cout<<"good"<<endl;
if(a<60)
cout<<"fail"<<endl;
if(100<a&&a<=0)
cout<<"error"<<endl;
}

谢谢了！