69 lines
1.3 KiB
C++
69 lines
1.3 KiB
C++
#include<bits/stdc++.h>
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using namespace std;
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//开一个准备读取数据的数组
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int const N = 10;
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//数组初始化
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int arr[N] = {0};
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//模拟第一个数据n
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int n;
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/**
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* 功能：从数据文件读取数据填充一维数组
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* 作者：黄海
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* 时间：2019-11-02
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*/
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void readOneDimensionArray() {
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//数据源文件
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string file = "./data.in";
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//1、读取数据到数组的方法
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ifstream fin(file);
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//读取n
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fin >> n;
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//和cin一样读取一维数组
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for (int i = 0; i < n; i++)
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fin >> arr[i];
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//关闭文件
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fin.close();
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fin.clear(ios::goodbit);
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}
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int main() {
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//读取一维数组文件
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readOneDimensionArray();
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cout << "1、下面将打印第一个数字n的内容：" << endl;
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cout << "n=" << n << endl;
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cout << endl;
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cout << "2、下面将打印读取到的数据内容" << endl;
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//输出一下读取到的内容
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for (int i = 0; i < N; i++) {
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cout << arr[i] << " ";
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}
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cout << endl;
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//===========================================================================
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//2、输出数据
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string file = "./data.out";
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//输出
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ofstream fout(file);
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//输出数组
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for (int i = 0; i < N; i++) {
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//内容
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fout << arr[i] << endl;
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cout << arr[i] << endl;
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}
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//关闭文件
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fout.close();
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//提示信息
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cout << "恭喜，成功输出到文件" + file + "中！" << endl;
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//===========================================================================
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return 0;
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}
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