#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;
struct entry
{
int id;
string name;
double gpa;
};
int main() {
ifstream inputfile("input.txt");
//ofstream outputfile("output.txt");
ostream &outputfile = cout;
vector<entry> entries;
if (inputfile.fail()) {
cout << "Cannot open inputfile" << endl;
}
/*
if (outputfile.fail()) {
cout << "Cannot open outputfile" << endl;
}
*/
string line;
while (getline(inputfile, line)) {
istringstream iss(line);
entry e;
string token;
getline(iss, token, '\t');
e.id = stoi(token);
getline(iss, e.name, '\t');
getline(iss, token, '\t');
e.gpa = stod(token);
/* alternatively:
iss >> e.id >> e.name >> e.gpa;
*/
entries.push_back(e);
}
inputfile.close();
//outputfile.close();
sort(entries.begin(), entries.end(),
[](const entry &e1, const entry &e2){
return e1.gpa > e2.gpa;
}
);
for (auto &e : entries) {
outputfile << e.id << '\t' << e.name << '\t' << e.gpa << '\n';
}
return 0;
}
20210001 Bill 3.61
20210002 Joe 3.21
20210003 Royce 4.32
20210004 Lucy 2.21
