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Si inca o nelamurire..

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Posted

Salut.:)

Avem codul:

int a=5 , b=4;

int *pa=&a, *pb=&b;

void functie1(int &x,int &y)

{

//instructiuni......

}

void functie2(int *x, int *y)

{

//aceleasi instructiuni

}

Intrebare: Difera cu ceva functie1(a,B) fata de functie2(pa,pb) ?:-/

Exista vreo diferenta in a transmite argumentele prin referinta si prin pointeri catre ele?

Posted (edited)

Da este o diferenta, cad apelezi functie1 in main o apelezi asa functie1(a, B), iar pentru functie2: functie2((int *)a, (int *)B). In primul caz transmiti ca parametri adresele variabilelor, iar in cazul doi doar pointeri catre variabile si de aceea trebuie sa faci cast catre pointer la int daca presupunem ca variabilele a si b sunt declarate ca int a, b. Uite un exemplu mai jos:


#include <stdio.h>
#include <conio.h>

void f1(int &x, int &y)
{
printf("%d %d\n", x, y);
}

void f2(int *x, int *y)
{
printf("%d %d\n", x, y);
}

int main()
{
int x = 10, y = 11;
f1(x, y);
f2((int *)x, (int *)y);

getch();
return 0;
}

Edited by Zamolxis666

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