ExI

#include <iostream>
#include <fstream>
#include <cstring>
#include <ctime>
#include <cstdlib>

using namespace std;

struct elev
{
    char id[6];
    char nume[40];
    char scoala[50];
}t[100];

int n;


void Separa(char s[200])
{
    char x[50];
    int k = 0, i;

    for(i = 0; s[i] != '-'; i++)
        x[k++] = s[i];
    x[k] = 0;
    while(x[k-1] == ' ')
    {
        x[k-1] = 0;
        k--;
    }
    strcpy(t[n].id, x);
    i++;
    for(; s[i] != '-'; i++)
        x[k++] = s[i];
    x[k] = 0;
    while(x[k-1] == ' ')
    {
        x[k-1] = 0;
        k--;
    }
    strcpy(t[n].nume, x);
    i++;
    while(s[i] == ' ') i++;
    strcpy(x, s+i);
    k = strlen(x);
    while(x[k-1] == ' ')
    {
        x[k-1] = 0;
        k--;
    }
    strcpy(t[n].scoala, x);
}
void Citire()
{
    char s[200];
    n = 0;
    ifstream fin("elevi.txt");
    fin.getline(s, 199);
    while(strcmp(s, "***") != 0)
    {
        Separa(s);
        n++;
        fin.getline(s, 199);
    }
    for(int i = 0; i < n; i++)
        cout << t[i].id << "*" << t[i].nume << "*" << t[i].scoala << "\n";
    fin.close();
}

void Amesteca()
{
    int i, j, k;
    elev x;
    srand(time(0));
    for(k = 1; k <= 100000; k++)
    {
        i = rand() % n;
        j = rand() % n;
        swap(t[i], t[j]);
    }
    for(i = 1; i < n;)
    {
        if((t[i].id == t[i+1].id)||(t[i].id == t[i-1].id))
        {
            x = t[i];
            for(j = i+1; j < n-1; j++)
                t[j] = t[j+1];
            t[n-1] = x;
        }
        else i++;
    }
    for(i = 0; i < n; i++)
        cout << t[i].id;
}

void Afisare()
{
    ofstream fout("elevi.out");
    for(int i = 0; i < n; i++)
        fout << t[i].id << " " << t[i].nume << " " << t[i].scoala << "\n";
    fout << "\n";
    fout.close();
}

int main()
{
    Citire();
    Amesteca();

    return 0;
}