2. Variable)

4. ASCII character (-
char
128
Unsigned
-
char
int -
-
long
3.4E-38 E+38
Float
1.7E-308
Double E+308
Unsigned
int

5. C
Variable Declaration)
type name;
type :
name :
C
main

6. #include <stdio.h>
int num;  num
float y;  y

7. C
C

8. A-Z a-z
Underscore)
A-Z
a-z -
Reserved Word)

9. C ANSI Standard C)
defa regist volatil
auto float struct break
ult er e
doubl
do far return switch while case
e
typede signe
goto short char else if
f d
unio unsig contin
const enum int sizeof
n ned ue
exter
long static void
n
Borland C

10. C
char
string
char name[n] = "str";
nam
e
n
str

11. C
C

12. C
-
-

13. a>b a b
a >= b a
b
a<b a b
a <= b a
b
a == b a b

14. x < 60 && x > 50 x
x == 10 || x == 15 x
x = 10 !x x

15. -

16. C
printf
printf
int float
string

17. %d
%u
%f
%c

18. printf
Hello
printf("Hello
Program C
Program C");
printf("Lampang Lampang
kunlayanee kunlayanee school
school");
Lampang
printf("Lampang
Thailand
Thailand");

19. scanf
C
scanf

20. scanf()
scanf("format",&varia
ble);
forma
t
printf()
varia
ble