how to create a record in C using only #include "stdio.h" main ()

I'm new to this but I need an answer as fast as possible I'm looking to make an arrangement that contains a total of 5 records so far what I had was the whole program but I was not running because of the records if they can solve that problem making the registration structure I would greatly appreciate it, this is the program:

#include "stdio.h"
main()
{          

      int altitud[2];
      i=1;
      while (i<2)
      {
            printf("Las revoluciones por minuto de todos los motores es de: ");
            scanf("%d", &altitud[i]);
            printf("La presión en PSI es: ");
            scanf("%d", &altitud[i].B);
            printf("la cantidad de aceite en l/m es: ");
            scanf("%d", &altitud[i].C);
            printf("La temperatura del aceite es de: ");
            scanf("%d", &altitud[i].D);
            printf("La temperatura de incendio es; ");
            scanf("%d", &altitud[i].E);
            }
      i=1;
      while(i<2)
      {
                 if(altitud[i].A>10800)
                 {
                                            printf("APU se apago por el exceso de revoluciones en el motor");
                                            }
                 if(altitud[i].B<3000)
                 {
                                           printf("APU se apago por falta de presión");
                                           }
                 if(altitud[i].C<175)
                 {
                                          ("APU se apagó por falta de aceite");
                                          }
                 if(altitud[i].D<380)
                 {
                                          ("APU se apago por falta de temperatura en el aceite");
                                          }
                 if(altitud[i].E>800)
                 {
                                          ("APU se apagó por incendio en una zona del avión");
                                          }
                 i=i+1
                 }
                 }

If anyone can help me create such a record without overdoing the program, I would appreciate it (the five registers are the first five letters and I need to enter them just after declaring the variable altitude [2])