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| #include <iostream>
#include <fstream>
#include <iomanip>
using namespace std;
struct information
{
string name = "NULL";
int score = -1;
} info[10];
void view()
{
ifstream fin;
fin.open("./data.txt");
if (!fin.is_open())
{
cout << "读取文件失败! " << endl;
exit(1);
}
int rank;
string name;
int score;
cout << setw(20) << left << "排名" << setw(20) << left << "昵称" << setw(20) << left << "积分" << endl;
while(fin >> rank >> name >> score)
cout << setw(20) << left << rank << setw(20) << left << name << setw(20) << left << score << endl;
cout << "---------------------------------------" << endl;
fin.close();
}
void read()
{
int rank;
ifstream fin;
fin.open("./data.txt");
if (!fin.is_open())
{
cout << "读取文件失败! " << endl;
exit(1);
}
int i = 0;
while (fin >> rank >> info[i].name >> info[i].score)
++i;
fin.close();
}
void write()
{
read();
ofstream fout;
fout.open("./data.txt");
if (!fout.is_open())
{
cout << "打开文件失败! " << endl;
exit(1);
}
string name;
int score;
int rank = 1;
cout << "请输入您的昵称和积分: ";
cin >> name >> score;
if (info[0].name == "NULL")
{
fout << rank << " " << name << " " << score << endl;
}
else if (info[9].name != "NULL")
{
info[9].name = name;
info[9].score = score;
for (int i = 0; i < 10; ++i)
{
for (int j = 0; j < 9 - i; ++j)
{
if (info[j].score < info[j + 1].score)
{
struct information temp;
temp = info[j];
info[j] = info[j + 1];
info[j + 1] = temp;
}
}
}
for (int i = 0; i < 10; ++i)
{
fout << i + 1 << " " << info[i].name << " " << info[i].score << endl;
}
}
else
{
int num = 0;
for (; info[num].name != "NULL"; ++num) {}
info[num].name = name;
info[num].score = score;
for (int i = 0; i < num; ++i)
{
for (int j = 0; j < num - i; ++j)
{
if (info[j].score < info[j + 1].score)
{
struct information temp;
temp = info[j];
info[j] = info[j + 1];
info[j + 1] = temp;
}
}
}
for (int i = 0; i < num + 1; ++i)
{
fout << i + 1 << " " << info[i].name << " " << info[i].score << endl;
}
}
cout << "---------------------------------------" << endl;
fout.close();
}
int menu()
{
int choice;
cout << "请问您需要查看还是写入文件: \n1->查看\n2->写入\n输入其他任意字符退出程序" << endl;
cin >> choice;
switch (choice)
{
case 1:
view();
return 0;
case 2:
write();
return 0;
default:
cout << "程序即将退出..." << endl;
return 1;
}
}
int main()
{
while (!menu()){}
return 0;
}
|
