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ܺκ, ͺ,
ۼ
takuma77
2006-01-22
ȸ
7579
÷
1. ܺκ
- ҴǴ
- Ϸ ̸ ˷
- ܺκ ܺ ϰ ϴ Լ Ǻ ռ Լ ܺ extern̶ ʿ䰡
- ܺ ܺ Ϸ Լ ٸ Ͽ ִ 쿡 Լ ݵ extern̶ ؾ߸ Ѵ
- ϳ α ϳ File ܺ static extern ̰
- ϳ α File ܺκ
뿹
#include
void sum(void) ; //Լ
int temp ;
//ܺκ
void main (void) {
int a= 10 ;
sum() ;
printf ("temp = %d ", temp) ;
printf ("a = %d ", a) ;
}
void sum (void) {
temp += 100 ;
printf ("a = %d ", a) ;
}
2.
- CPU register Ѵ.
- ۾ ϱ Ͽ
- 밡 int, char, ٰŸ
뿹
#include
void main(void) {
register int i, j = 0 ;
//
for (i=1 ; i <= 200 ; i ++) j += i ;
printf ("%d ", j);
}
3. (Static)
- Ͻ Ȯ ʱȭ ̷ ڷ
- Ͻ ʱȭ ̷Ƿ ʱⰪ ʾ ġ 0, ' ' ʱȭ
뿹
#include
int sub(void) ;
void main(void) {
int i ;
for (i = 0 ; i < 5 ; i++ ) {
sub();
printf ("i = %d ", i) ;
}
}
int sub(void) {
static int i = 1;
//
auto int k = 3 ;
printf (" i = %d k = %d ", i ++, k++);
}
Guest
-->
ܺκ, ͺ,
2006/01/22
7579
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