kuba.cpp

#include <fstream>
#include <iostream>

using namespace std;

int main(){
  ifstream inputfile;
  inputfile.open("dane.bin");
  int students=0;
  double math,cs;
  math=cs=0.0;
  string tmp;
  while(!inputfile.eof()){
    inputfile>>tmp;
    inputfile>>tmp;
    double a;
    inputfile>>a;
    cs+=a;
    inputfile>>a;
    math+=a;
    getline(inputfile,tmp);
    students++;
  }
  math/=students;
  cs/=students;
  inputfile.close();
  inputfile.open("dane.bin");
  ofstream outputfile;
  outputfile.open("prymusi.txt");
  string firstname,lastname;
  double currcs,currmath;
  while(!inputfile.eof()){
    inputfile>>firstname>>lastname>>currcs>>currmath;
    if(currcs>(1.2*cs) && currmath>(1.2*math)){
      outputfile<<firstname<<" "<<lastname<<" "<<currcs<<" "<<currmath<<endl;
    }
    getline(inputfile,tmp);
  }
  outputfile.close();
  inputfile.close();
  inputfile.open("dane.bin");
  int n;
  cin>>n;
  int i=0;
  while(!inputfile.eof() && i<=n){
    i++;
    if(i==n){
      inputfile>>firstname>>lastname>>currcs>>currmath;
    }
    getline(inputfile,tmp);
  }
  cout<<firstname<<" "<<lastname<<",  CS Grade: "<<currcs<<", Math Grade: "<<currmath<<endl;
  inputfile.close();
  return 0;
}