33 lines
644 B
C++
33 lines
644 B
C++
#include <bits/stdc++.h>
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using namespace std;
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// double类型用==判断相等为什么不行
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// https://blog.csdn.net/m0_38125278/article/details/89026537
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//Epslion在希腊符号中代表一个极小数的意思这里取1*10的-8次幂
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#define Epslion 1e-8
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int main() {
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double n;
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cin >> n;
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//个数
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int count = 0;
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//暂存数组
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int a[10] = {0};
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while (true) {
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n *= 2;
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int jiInt = (int) n;
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a[count++] = jiInt;
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n -= jiInt;
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//小于一定的精度
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if (n < Epslion) break;
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}
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cout << "0.";
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for (int i = 0; i < count; i++) {
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cout << a[i];
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}
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return 0;
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} |