C++/Review
Call by Value Call by Address Call by Reference 간단한 예제
갈릭새우칩
2019. 8. 14. 18:02
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#include <iostream>
using namespace std;
//call by value
void func(int a, int b)
{
cout << "call by value" << endl;
a++;
b++;
cout << "IN Function a : " << a << endl;
cout << "IN Function b : " << b << endl;
}
//call by address
void func(int * a, int * b)
{
cout << "call by address" << endl;
*a += 1;
*b += 1;
cout << "IN Function a : " << *a << endl;
cout << "IN Function b : " << *b << endl;
}
//call by reference
void func1(int & a, int & b)
{
cout << "call by reference" << endl;
a++;
b++;
cout << "IN a : " << a << endl;
cout << "IN b : " << b << endl;
}
int main()
{
int a = 1;
int b = 3;
//call by value
func(a, b);
cout << "OUT a : " << a << endl;
cout << "OUT b : " << b << endl;
cout << endl;
//call by address
func(&a, &b);
cout << "OUT a : " << a << endl;
cout << "OUT b : " << b << endl;
a = 1;
b = 3;
cout << endl;
//call by reference
func1(a, b);
cout << "OUT a : " << a << endl;
cout << "OUT b : " << b << endl;
}
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