klaidass

#include <iostream>
#include <conio.h>
using namespace std;

double Vidurkis();

int main(int argc, char *argv[]) {
  cout << Vidurkis();
  getch();
  return 1;
}

double Vidurkis() {
  int pazymiai[10];
  int n=10;
  double suma=0;
  double vidurkis;
  for(int i=0; i<n; i++) {
    cout << "Iveskite pazymi: ";
    cin >> pazymiai[i]; 
    suma = suma + pazymiai[i];      
  }      
  vidurkis = suma / n;
  return vidurkis;
}
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#include <iostream>
#include <conio.h>
#include <fstream.h>
using namespace std;

void Ivesti();
void Isvesti();

int main(int argc, char *argv[])
{
  Ivesti();
  Isvesti();
  getch();
  return 1;
}

void Ivesti() {
  int amzius;
  double ugis;
  ifstream srautas;
  srautas.open("duom.txt");
    srautas >> amzius;
    srautas >> ugis;    
  srautas.close();
  cout << "Mano amzius: " << amzius << endl;
  cout << "Mano ugis: " << ugis << endl;
}

void Isvesti() {
  int amzius = 14;
  double ugis = 1.68;
  ofstream srautas;
  srautas.open("rez.txt");
    srautas << amzius << " ";
    srautas << ugis;
  srautas.close();     
}
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#include <iostream>
#include <conio.h>
#include <fstream>
using namespace std;

void Kasininke();

int main(int argc, char *argv[])
{
  Kasininke();  
  getch();
  return 1;
}

void Kasininke() {
  const int n = 3;
  double kaina[n];
  float suma = 0;
  
  for(int i=0; i<n; i++) {
    cout << "Iveskite prekes " << i+1 << " kaina: ";
    cin >> kaina[i];
 }
  for(int i=0; i<n; i++) {
  suma = suma + kaina[i];        
 }
  cout <<"------------------------------" << endl;
  cout << "Viso moketi: " << suma << " Lt" << endl;
  
  ofstream f;
  f.open("cekis.txt");
    for(int i=0; i<n; i++){
       f << kaina[i] << endl;
 } 
  f << "--------------------" << endl;
  f << "Viso moketi: " << suma;
  f.close();
}
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(for copying at home)