多项式输出

2021秋算法入门班

#include <bits/stdc++.h>

using namespace std;

int main()

{

int n;

cin >> n;

int a[105];

for (int i = n; i >= 0; i--)

{

cin >> a[i];

}

for (int i = n; i >= 0; i--)

{

if (a[i] == 0) continue;

//1.处理符号

if (a[i] > 0 && n == i) {}

if (a[i] > 0 && n != i) cout << "+";

if (a[i] < 0)cout << "-";

//2.处理系数

if (i != 0 && (a[i] == 1 || a[i] == -1)) {}

else cout << abs(a[i]);

//3.处理指数

if (i == 0 || i == 1)

{

if (i == 0) {}

if (i == 1)cout << "x";

}

else cout << "x^" << i;

}

}