35 lines
664 B
C++
35 lines
664 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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int a[N], idx;
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// 1234000
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int main() {
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int n;
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cin >> n;
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if (n == 0) {
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cout << 0 << endl;
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exit(0);
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}
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if (n < 0) {
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cout << "-";
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n = -n;
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}
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while (n) {
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a[++idx] = n % 10; //由后到前 4 3 2 1 --> a[1]=4 a[2]=3
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n /= 10;
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}
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bool flag = false; //是不是已经遇到过一个非零数字
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for (int i = 1; i <= idx; i++) {
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if (a[i] != 0) flag = true;
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if (a[i] == 0) {
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if (flag) cout << 0;
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} else
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cout << a[i];
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}
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return 0;
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} |