Solución

Ejercicio 1
#include <iostream.h>
#include <math.h>
#include <iomanip.h>
#include <stdlib.h>
#define NUM 24
void Estadisticas(double temp[], double hum[]);
void PideDatos(double temp[], double hum[], bool);
double Media(double []);
void MaxMin(double[], double&, int&, double[], double&,int&, bool);
double DesvStd(double []);
void MostrarDatos(double temp[], double hum[]);
void main()
{
int opc;
double temp[NUM],hum[NUM];
for (int i=0;i<NUM;i++) temp[i]=hum[i]=0;
while(true){
cout << "\t** Menu **"<<endl;
cout << "1. Introducir Todos los datos"<<endl;
cout << "2. Introducir el dato de 1 hora"<<endl;
cout << "3. Mostrar datos"<<endl;
cout << "4. Datos Estadisticos"<<endl;
cout << "5. Limpiar Pantalla"<<endl;
cout << "6. Salir"<<endl;
cout << "\tOpcion:?";
cin >> opc;
switch(opc){
case 1: PideDatos(temp,hum,true); break;
case 2: PideDatos(temp,hum,false); break;
case 3: MostrarDatos(temp,hum); break;
case 4: Estadisticas(temp,hum); break;
case 5: system("cls"); break;
case 6: return;
}
}
}
void Estadisticas(double temp[], double hum[])
{
double mdt, mdh, mt, mh;
int pmt, pmh;
//pmt:posicion maximo temp. pmh: pos. max. humedad
mdt = Media(temp);
//media de Temp.
mdh = Media(hum);
//media de Hum,
cout << "\n** Datos Estadisticos ***" << endl;
cout.setf(ios::left|ios::fixed);
cout <<setw(10)<< ""<<setw(15)<< "Temperatura" << setw(10) << "Humedad" << endl;
cout.fill('.');
//media
cout <<setw(10)<< "Media" << setw(15)<< setprecision(2) << mdt;
cout.fill(' ');
cout << setw(10) << setprecision(2) << mdh << endl;
//maximos
cout.fill('.');
MaxMin(temp,mt,pmt,hum,mh,pmh,true);
//maximos
cout <<setw(10)<< "Maximos" << setw(15)<< setprecision(2) << mt;
cout.fill(' ');
cout << setw(10) << setprecision(2) << mh << endl;
//minimos
MaxMin(temp,mt,pmt,hum,mh,pmh,false);
//minimos
cout.fill('.');
cout <<setw(10)<< "Minimos" << setw(15)<< setprecision(2) << mt;
cout.fill(' ');
cout << setw(10) << setprecision(2) << mh << endl;
//desv. estandar
double dsvt = DesvStd(temp);
double dsvh = DesvStd(hum);
cout.fill('.');
cout <<setw(10)<< "Desv.Std" << setw(15)<< setprecision(2) << dsvt;
cout.fill(' ');
cout << setw(10) << setprecision(2) << dsvh << endl << endl;
}
double DesvStd(double vec[])
{
double ds=0;
double md = Media(vec);
for (int i=0;i<NUM;i++){
ds += pow(vec[i]-md,2.0);
}
ds = sqrt(ds/(NUM-1));
return ds;
}
void MaxMin(double temp[],double &mt,int &pmt,double hum[],double &mh,int &pmh,bool sw)
{
mt=temp[0]; pmt=0;
mh=hum[0]; pmh=0;
for (int i=1;i<NUM;i++){
if (sw==true){
//maximo
if (mt < temp[i]) { mt=temp[i]; pmt=i;}
if (mh < hum[i]) { mh=hum[i]; pmh=i;}
}
else{
//minimos
if (mt > temp[i]) { mt=temp[i]; pmt=i;}
if (mh > hum[i]) { mh=hum[i]; pmh=i;}
}
}
}
double Media(double vec[])
{
double med=0;
for (int i=0;i<NUM;i++){
med += vec[i];
}
return (med/NUM);
}
void MostrarDatos(double temp[], double hum[])
{
cout.setf(ios::left|ios::fixed);
cout << setw(10) << "Hora" << setw(10)<<"Temp"<< setw(10) << "Humedad"<<endl;
for (int i=0;i<NUM;i++){
cout.fill('.');
cout << setw(10) << i ;
cout << setw(10) << setprecision(2) << temp[i] ;
cout.fill(' ');
cout << setw(10) << setprecision(2) << hum[i] << endl;
}
cout << endl;
}
void PideDatos(double temp[], double hum[], bool sw)
{
int h;
if (sw){
//true es todos
}
for (int i=0;i<NUM;i++){
cout << i << ":00h (Temp y Hum):? ";
cin >> temp[i] >> hum[i];
}
}else{
//solo uno
cout << "Hora?:"; cin >>h;
cout << h << ":00h (Temp y Hum):? ";
cin >> temp[h] >> hum[h];
}
Ejercicio 2
#include <iostream.h>
#include <string.h>
#include <stdlib.h>
class Asignatura
{
char *Name;
double Nota;
public:
Asignatura(){Name=NULL;}
~Asignatura(){ delete [] Name;}
void Asigna(char *nam="",double Not=0){
Name = new char[ strlen(nam) + 1];
strcpy(Name,nam);
Nota=Not;
}
double GetNota(){ return Nota;}
friend ostream& operator<<(ostream &co, Asignatura &as){
co << "\tAsig.:"<<as.Name << " Nota:" << as.Nota;
return co;
}
};
class Persona
{
protected:
long DNI;
char *Name; //nombre y Apellidos
public:
Persona(){Name=NULL;}
void Asigna(char *n,long d){
Name = new char[ strlen(n) + 1];
strcpy(Name,n);
DNI = d;
}
~Persona(){ delete [] Name; }
};
class Alumno: public Persona
{
long carnet;
int numAsig;
Asignatura *asig;
public:
Alumno(){numAsig=0;}
~Alumno(){ if (numAsig>0) delete [] asig;}
void Asigna(char *name="", long DNI=0, long car=0, int numA=0){
Persona::Asigna(name,DNI);
carnet = car;
numAsig = numA;
asig = new Asignatura[numA]; //crear numA asignaturas
char tmp[80]; double Not;
for (int i=0;i<numAsig;i++){
cout << "\tAsig. " << i+1 << " (Nombre Nota):?";
cin >> tmp >> Not;
asig[i].Asigna(tmp,Not);
}
}
double NotaMedia()
{
double nm=0;
for (int i=0;i<numAsig;i++){
nm += asig[i].GetNota();
}
return nm/numAsig;
}
friend ostream& operator<<(ostream &co, Alumno *al){
co << "Nombre: " << al->Name;
co << " Carnet: " << al->carnet ;
co << " DNI: " << al->DNI << endl;
for (int i=0;i<al->numAsig;i++){
co << al->asig[i]<<endl;
}
co << "\tNota Media:" << al->NotaMedia() << endl;
return co;
}
friend istream& operator>>(istream &ci, Alumno *al){
char tmp[120];
long dni,carnet,numA;
cout << "Nombre:"; ci.getline(tmp,120);
cout << "DNI:"; cin >> dni;
cout << "Carnet:"; cin >> carnet;
cout << "Num.Asignaturas:"; cin >> numA;
al->Asigna(tmp,dni,carnet,numA);
return ci;
}
};
#define NUM 50
int Menu();
void main()
{
int opc,num=0;
Alumno *lista[NUM];
while(true){
opc = Menu();
if (opc==1) {
// liberar memoria asignada a la lista
return;
//terminar
}
else if (opc==2){ cin.ignore(1,'\n');
lista[num]=new Alumno;
cin >> lista[num];
//pedir datos
num++;
}
else if (opc==3){
//display
for (int i=0;i<num;i++) cout << lista[i] << endl;
}
else if (opc==4){
// limpiar pantalla
system("cls");
}
}
}
int Menu()
{
int opc;
while(true){
cout << "\t** Menu **"<<endl;
cout << "1. Salir"<<endl;
cout << "2. Introducir Datos"<<endl;
cout << "3. Mostrar Datos por consola"<<endl;
cout << "4. Limpiar Pantalla"<<endl;
cout << "5. Grabar Datos a disco"<<endl;
cout << "\tOpcion:?";
cin >> opc;
if ( opc >0 && opc <6) return opc;
}
}