변수와 자료형 - Youtube 강의동영상 https://youtu.be/5bcBK1ciA5E - 코드는 여기에서 다운 받으세요 https://github.com/dongupak/Basic-C-Programming

2. ( )
, ,

3. ( )
, ,
main memory

4. ( )
, ,
main memory

5. 0xFF
( )
, ,
main memory

6. 0xFF
( )
, ,
main memory
radius
radius

7. 0xFF
( )
, ,
main memory
radius
radius500
/ /

8. 1234 0.123 ‘A’

9. 1234 0.123 ‘A’
(Integer type)
(Floating-point type)
(Character type)

10. 1234 0.123 ‘A’
(Integer type)
(Floating-point type)
(Character type)
.

11. 1234 0.123 ‘A’
(Integer type)
(Floating-point type)
(Character type)
short
int
long
float
double
char

12. 1234 0.123 ‘A’
(Integer type)
(Floating-point type)
(Character type)
.
short
int
long
float
double
char

13. 1234 0.123 ‘A’
(Integer type)
(Floating-point type)
(Character type)
.
short
int
long
float
double
char2byte
4byte
8byte
4byte
8byte
1byte

14. #include<stdio.h>
int main(void)
{
int x;
printf(" x : %dn", sizeof(x));
printf("char : %dn", sizeof(char));
printf("int : %dn", sizeof(int));
printf("short : %dn", sizeof(short));
printf("long : %dn", sizeof(long));
printf("float : %dn", sizeof(float));
printf("double : %dn", sizeof(double));
return 0;
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
sizeof.c

15. Lab

16. ,
1. , _
2. .
3. (_) .
4. .
5. C .
a1 _
!
aName
a Name
_abc123
123abc_
index Index
C
index Index

17. C
(reserved words) .
auto double int struct
break else long switch
case enum register typedef
char extern return union
const float short unsigned
continue for signed void
default goto sizeof volatile
do if static while

18. char c; // (1)
int sum; // (2)
double rate; // (3)
int width, height; // width height

19. char c = 'a';
int sum = 0;
double rate = 4.9;
int width = 100, height = 200;

20. char c = 'a';
int sum = 0;
double rate = 4.9;
int width = 100, height = 200;

21. .
int value;
value = 10;
value = 20;
int value1 = 10;
int value2;
value2 = value1; // value2 value1

23. ??
.

24. ??
.

25. ??
.
??
.

26. ??
.
??
.
GIGO(garbage-in garbage-out)
: .

27. ( ) .
( )
??
.
??
.
GIGO(garbage-in garbage-out)
: .

28. ( ) .
( )
??
.
??
.
GIGO(garbage-in garbage-out)
: .
int num1;

29. ( ) .
( )
??
.
??
.
GIGO(garbage-in garbage-out)
: .
int num1;
int num2;

30. ( ) .
( )
??
.
??
.
GIGO(garbage-in garbage-out)
: .
int num1;
int num2;
num2 = num1 + 100; // ??

31. ( ) .
( )
??
.
??
.
GIGO(garbage-in garbage-out)
: .
int num1;
int num2;
num2 = num1 + 100; // ??
//