wskaźniki - zadania

ZADANIE 1

#include <iostream>

using namespace std;
int a = 15;
int main(){
cout << "wartosc przypisana do zmiennej: " << a << endl;
cout << "adres w pamieci tej zmiennej: " << (intptr_t)&a << endl;
}

ZADANIE 2

#include <iostream>

using namespace std;
int b = 20;
int *a = &b;
int main(){
cout << "wartosc b: " << b << endl;
cout << "adres b: " << (intptr_t)a << endl;
cout << "adres wskaznika a: " << (intptr_t)&a << endl;
cout << "wartosc wskaznika a: " << *a << endl;
}


ZADANIE 3

#include <iostream>

using namespace std;
int a = 14;
float b = 6.7;
char c = 'x';
int *w_a = &a;
float *w_b = &b;
char *w_c = &c;
int main(){
cout << "a: " << a << endl;
cout << "b: " << b << endl;
cout << "c: " << c << endl;
cout << "adres a: " << (intptr_t)&a << endl;
cout << "adres b: " << (intptr_t)&b << endl;
cout << "adres c: " << (intptr_t)&c << endl;
cout << "wartosc adresu a: " << *w_a << endl;
cout << "wartosc adresu b: " << *w_b << endl;
cout << "wartosc adresu c: " << *w_c << endl;
}


ZADANIE 4

#include <iostream>

using namespace std;
int a = 6;
int b = 8;
int *w_a = &a;
int *w_b = &b;
int main(){
cout << "suma: " << *w_a + *w_b << endl;
}

ZADANIE 5

#include <iostream>

using namespace std;
int a = 6;
int b = 8;
int *w_a = &a;
int *w_b = &b;
int main(){
cout << "iloczyn: " << *w_a * *w_b << endl;
}

ZADANIE 6

#include <iostream>

using namespace std;
int suma(int *a, int *b);
int a = 6;
int b = 8;
int *w_a = &a;
int *w_b = &b;
int main(){
cout << "suma wynosi: " << suma(w_a, w_b)<< endl;
}

int suma(int *a, int *b){
return *a + *b;
}

ZADANIE 7

#include <iostream>
#include <math.h>
using namespace std;
float pole(int *r);
int r = 8;
int *w_r = &r;
int main(){
cout << "pole kola wynosi: " << pole(w_r)<< endl;
}

float pole(int *r){
return *r * *r * M_PI;
}

ZADANIE 8

#include <iostream>

using namespace std;


int a = 45;
int b = 44;
int *w_a = &a;
int *w_b = &b;

int main(){
if (*w_a > *w_b) cout << "Liczba 45 jest wieksza od 44" << endl;
else cout << "Liczba 44 jest wieksza od 45" << endl;
}

ZADANIE 9

#include <iostream>

using namespace std;
int silnia(int *w_a);
int a = 6;
int *w_a = &a;


int main(){
cout << "Silnia z 6 wynosi: " << silnia(w_a) << endl;
}
int silnia(int *w_a){
   int b = 1;
   for (int i = 1; i < *w_a+1; i++) b*=i;
   return b;
}

ZADANIE 10

#include <iostream>

using namespace std;
int suma(int *w_a);
int a[] = {8, 6, 2, 6};
int *w_a = a;


int main(){
cout << "Suma wartosci elementow z tablicy wynosi: " << suma(w_a) << endl;
}
int suma(int *w_a){
    int b = 0;
    for (int i = 0; i < 4; i++) b+=*(w_a+i);
    return b;
}