#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct pers{ char nume[20];
             char pren[20];
             float age;};
  typedef struct pers pers;

  int main() {
      pers v[20];
      int i;
      char output_filename[30] = "D:\\fisiere\\ex6.txt";
      FILE *f = fopen(output_filename, "w+");
      if (f == NULL) return -1;
      for(i=0;i<2;i++)
      {  scanf("%s",&v[i].nume);
         scanf("%s",&v[i].pren);
          scanf("%f", &v[i].age);

      }


          for(i=0;i<2;i++)
          {
              fprintf(f,"%s ",v[i].nume);
              fprintf(f,"%s ",v[i].pren);
              fprintf(f,"%f \n",v[i].age);

          }
          float sum=0;
          fseek(f,0,SEEK_SET);
          for(i=0;i<2;i++)
          {
               fscanf(f,"%s",&v[i].nume);
               fscanf(f,"%s",&v[i].pren);
               fscanf(f,"%f",&v[i].age);
              printf("%s ",v[i].nume);
              printf("%s ",v[i].pren);
              printf("%f ",v[i].age);
             sum=sum+v[i].age;                  // punctul d

          }
          float media;
          media=sum/2;
          printf("%f",media);
         /* pers x;                        //punctul c
          scanf("%s",&x.nume);
          scanf("%s",&x.pren);
          scanf("%f",&x.age);
          fseek(f,0,SEEK_SET);
          int  bec=0;
          for(i=0;i<2;i++)
          {
              if( strcmp(x.nume,v[i].nume)==0 && strcmp(x.pren,v[i].pren)==0 && x.age==v[i].age)  bec=1;

          }
          fseek(f,0,SEEK_END);
           if(bec==1) printf("exista");
              else {fprintf(f,"%s ",x.nume);
                   fprintf(f,"%s ",x.pren);
                   fprintf(f,"%f ",x.age);}*/
             pers aux;
               fseek(f,0,SEEK_SET);
               for(i=0;i<2;i++)
                   if(v[i+1].age<v[i].age)      {  aux=v[i];
                                                  v[i]=v[i+1];
                                                  v[i+1]=aux;}


             for(i=0;i<2;i++)
      {
          fprintf(f,"%s ",v[i].nume);
          fprintf(f,"%s ",v[i].pren);
          fprintf(f,"%f \n",v[i].age); }


               fclose(f);




    return 0;