37 lines
921 B
C++
37 lines
921 B
C++
#include <bits/stdc++.h>
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using namespace std;
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const int N = 110;
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//这模拟太啰嗦了~
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int main() {
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int n;
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cin >> n;
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int x;
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// a[0~n-1]是系数,a[n]是常数
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for (int i = 0; i < n; i++) {
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cin >> x;
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if (x == 0) continue;
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if (x < 0) {
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if (x == -1)
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cout << "-";
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else
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cout << x; //-1不要输出1,其它的-2,-3等如实输出
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} else { // x肯定大于0
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if (i > 0) cout << "+"; //第一位前面不能有+号
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if (x != 1) cout << x; //系数1不输出,2,3等正常输出
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}
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if (n - i > 1) cout << "x^" << n - i;
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else
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cout << "x"; // 1次方特殊
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}
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//常数位
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cin >> x;
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if (x > 0)
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cout << "+" << x;
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else if (x < 0)
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cout << x;
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return 0;
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} |