构建一个结构体struct student,包括两个成员：id和avescore。
构建一个struct student类型的动态数组（new 操作），元素个数由用户输入（要求3个）。
输入数据存入数组并显示出来（{1,5;2,8;3,10}）
使用文本模式通过I/O流把数组内容存入磁盘文件:student.txt
从student.txt中读出数据，采用二进制模式存入文件student.bin
使用VS打开两个文件，比较两个文件的区别
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c++ io流输入输出问题求解
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- nokianasty 2018-05-02 09:17已采纳
C++ 代码已经实现，代码调试通过。请速度采用，急用C币下载！！
#include<iostream> #include<fstream> using namespace std; struct student { int id; int avescore; }; int main() { int numbers = 0; cout << "请输入元素个数："; cin >> numbers; student* pArrStudent = new student[numbers]; for (int i = 0; i < numbers; i++) { cout << "请输入第" << i + 1 << "个元素id和avescore，空格分隔："; int id = 0; int avescore = 0; cin >> id >> avescore; pArrStudent[i].id = id; pArrStudent[i].avescore = avescore; } //显示输入的数据 cout << "({"; for (int i = 0; i < numbers; i++) { if (i < numbers - 1) { cout << pArrStudent[i].id << "," << pArrStudent[i].avescore << ";"; } else { cout << pArrStudent[i].id << "," << pArrStudent[i].avescore; } }; cout << "})"; //存入磁盘文件:student.txt ofstream oFile(L"student.txt"); oFile.write((char*)pArrStudent, sizeof(student)*numbers); oFile.close(); //从student.txt中读出数据 student* pArrStudentTemp = new student[numbers]; ifstream iFileTemp(L"student.txt"); iFileTemp.read((char*)pArrStudentTemp, sizeof(student)*numbers); iFileTemp.close(); //采用二进制模式存入文件student.bin ofstream oFileTemp(L"student.bin", ios::binary); oFileTemp.write((char*)pArrStudent, sizeof(student)*numbers); oFileTemp.close(); delete []pArrStudent; delete[]pArrStudentTemp; return 0; };点赞 评论分享 - nokianasty 2018-05-02 09:11
C++ 代码已经实现，代码调试通过。请速度采用，急用C币下载！！
#include
#includeusing namespace std;
struct student
{
int id;
int avescore;
};int main()
{
int numbers = 0;
cout << "请输入元素个数：";
cin >> numbers;
student* pArrStudent = new student[numbers];
for (int i = 0;i < numbers;i++)
{
cout << "请输入第" << i + 1 << "个元素id和avescore，空格分隔：";
int id = 0;
int avescore = 0;
cin >> id >> avescore;
pArrStudent[i].id = id;
pArrStudent[i].avescore = avescore;} //显示输入的数据 cout << "({"; for (int i = 0; i < numbers; i++) { if (i < numbers - 1) { cout << pArrStudent[i].id << "," << pArrStudent[i].avescore << ";"; } else { cout << pArrStudent[i].id << "," << pArrStudent[i].avescore; } }; cout << "})"; //存入磁盘文件:student.txt ofstream oFile(L"student.txt"); oFile.write((char*)pArrStudent, sizeof(student)*numbers); oFile.close(); //从student.txt中读出数据 student* pArrStudentTemp = new student[numbers]; ifstream iFileTemp(L"student.txt"); iFileTemp.read((char*)pArrStudentTemp, sizeof(student)*numbers); iFileTemp.close(); //采用二进制模式存入文件student.bin ofstream oFileTemp(L"student.bin", ios::binary); oFileTemp.write((char*)pArrStudent, sizeof(student)*numbers); oFileTemp.close(); return 0;};
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