CB_X2_Jun @ 2024-08-06 19:49:26
#include <iostream>
using namespace std;
int n,s,x;
int main()
{
cin >> n;
s=n;
for(int i=n; i>=1; i--)
{
cin >> x;
if(i==s)
{
if(i==1)
{
if(x==0)continue;
else if(x==1)cout << "x";
else if(x==-1)cout << "-x";
else cout << x << "x";
}
if(x==0)
{
s--;
continue;
}
else if(x==1)cout << "x^" << i;
else if(x==-1)cout << "-x^" << i;
else
{
cout << x << "x^" << i;
}
}
else
{
if(i==1)
{
if(x==0)continue;
else if(x==1)cout << "+x";
else if(x==-1)cout << "-x";
else if(x<0)cout << x << "x";
else cout << "+" << x << "x";
}
else if(x==0)
{
continue;
}
else if(x==1)cout << "+x^" << i;
else if(x==-1)cout << "-x^" << i;
else if(x<0)cout << x << "x^" << i;
else cout << "+" << x << "x^" << i;
}
}
cin >> x;
if(n==0&&x==0)
{
cout << 0;
return 0;
}
if(x>0)cout << "+" << x;
else if(x<0) cout << x;
return 0;
}
rt,
by CB_X2_Jun @ 2024-08-06 19:51:55
Hack 是
0
1
我会输出
+1
????????
by CB_X2_Jun @ 2024-08-06 19:54:46
欸我好像懂了,我代码里
cin >> x;
if(n==0&&x==0)
{
cout << 0;
return 0;
}
if(x>0)cout << "+" << x;
else if(x<0) cout << x;
有问题吧???
我好像应该把
by CB_X2_Jun @ 2024-08-06 19:59:51
by CB_X2_Jun @ 2024-08-06 20:00:32
事实证明根本就甭发讨论
by ouyangdou @ 2024-08-14 18:40:18
@CB_X2_Jun n=0时常数项为正数不用输出+,n=1时一次项系数为正数是不用输出+。