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Լ Ű
ۼ
takuma77
2006-01-22
ȸ
7608
÷
1. Ű Ư¡
Ű
- ǸŰ (actual parameter) : ȣԼ ʿ
- ĸŰ (formal parameter) : ȣԼ ʿ
Ű Ư¡
- ǸŰ Ű ġؾ Ѵ.
- ǸŰ ĸŰ Ƶ (ٸ ҿ )
2. Ű
Call by value ( ȣ )
- ȣԼ ȣԼ ǸŰ ϴ .
(ǸŰ )
Call by reference (ּ ȣ )
- ȣԼ ȣԼ ǸŰ ּҸ ϴ
(ǸŰ ɼ )
Call by value Լ 1 return .
Call by reference ġ returnϴ Ͱ ִ.
( return Ǵ ƴ)
3.
Call by value
#include <stdio.h>
void change(int, int) ;
void main() {
int x = 5, y = 10 ;
printf ("x=%d y=%d ", x, y) ;
change(x, y) ;
printf ("x=%d y=%d ", x, y) ;
}
void change (int a, int b) {
int t ;
printf ("x=%d y=%d ", a, b) ;
t = a ;
a = b ;
b = t ;
printf ("x=%d y=%d ", a, b) ;
}
Call by reference
$include <stdio.h>
void change (int *, int *) ;
void main() {
int x = 5, y = 10 ;
printf ("x=%d y=%d ", a, b) ;
change(&x, &y);
printf ("x=%d y=%d ", a, b) ;
}
void change(int *a, int *b) {
int t ;
printf ("x=%d y=%d ", *a, *b) ;
t = *a ;
*a = *b ;
*b = t ;
printf ("x=%d y=%d ", *a, *b) ;
}
Guest
Խù ϴ.
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