Flowchart

C

COMPUTER PROGRAMMING350130

Computer Programming 2

Flowchart

+ * / %

Flowchart

/

( )

/

Computer Programming 3

Flowchart (1)

x y x + y

x+y

x, y

x+y

Computer Programming 4

Flowchart (2)

x y x y

y=0 Error

y0

x y

x, y

xy

y=0 ?

Error

Computer Programming 5

Computer Programming 6

()

Flowchart

Computer Programming 7

edit : compile : execute : debug : Integrated programming environment software

edit-compile-execute-debug

Computer Programming 8

C

(Dennis Ritche)

.. 1972

(Unix Operating System)

Computer Programming 9

Computer Programming 10

C

Computer Programming 11

Computer Programming 12

Computer Programming 13

Computer Programming 14

( 100%)

;

!!!

Computer Programming 15

C

keywords : 48 ( do, while, if, else, switch, ...)

operators : 40 ( +, , *, /, %, +=, ...)

library : ( printf, cos,sort, scanf, getch, getchar, floor,

strcpy, strcmp, .......)

Computer Programming 16

(Data Type)

7

: short, int, long

: float, double, long double

: char

( )

array, structure, union, enumerate

Computer Programming 17

( ANSI C )

char (1 ), short (2 ), int (2 ), long (4 ),

float (4 ), double (8 ), long double (10 )

( int long)

compiler

:

Computer Programming 18

()

1023, 76289, 0, 10, +67392

short (-32678 32767)

int (- 2^(size in bit - 1) 2^(size in bit - 1))

long (-2147483648 214748647)

: unsigned

unsigned int ( 0 - 4294967296 ) CPU 32 bits OS 32 bits

(integer)

Computer Programming 19

102.0, 3.14159, 0.0, -10.8, +0.3333

floating point

10000000 0.1x108 , 0.0000012 0.12x10-5

float 6-9

( -3.4x1038 -1.4x10-45 1.4x10-45 3.4x1038)

double 15-17

( -1.8x10308 -4.9x10-324 4.9x10-324 1.8x10308)

(real number)

Computer Programming 20

float int

int

float

( )

long 2147483647

float 2147483647

2.14748365 x 109

?

Computer Programming 21

char

( ASCII CODE )

(character)

'a', 'b', 'A', 'B', Z', z'

0-9

'1', '2',

'\n' '\t' tab

(character)

Computer Programming 22

ASCII Code

Computer Programming 23

( ANSI C )

Computer Programming 24

(Variable)

Computer Programming 25

( )

A ??

grade k

A F

grade k

F F

grade k

Computer Programming 26

Computer Programming 27

Computer Programming 28

;

int count

int counter = 0.75;

char grade = A;

integer counter;

Floating radius = "15.25";

int void;

double char = 3.45;

Computer Programming 29

$ _

( function )

int17 butterCup Public int2String day__of__week

7zean I..love..you public ohOH! ed--edd--n--eddy

Computer Programming 30

auto double int structbreak else long switchcase enum register typedefchar extern return unionconst float short unsignedcontinue for signed voiddefault goto sizeof volatiledo if static while

Computer Programming 31

:

Function :

_ $

--> score

--> color

""

numStudents dayOfWeek imageBuffer

tvChannel customerID initialVelocity

comment

// C++ //

/* */ C /* */

system(pause); windows

Computer Programming 32

Computer Programming 33

I/O

Computer Programming 34

C

printf Function ,,

format

printf(Summation of %d and %d = %d,A,B,C);

%d format integer

A,B,C format

Computer Programming 35

printf format

printf(Microcomputer);

format printf

%d %o

%x %u

%e 1.3e5

%f

%g %e %f

%c character 1

%s (string)

Computer Programming 36

Computer Programming 37

A = 10 , B = 20

#include

void main(void )

{

int A,B;

A = 10; B = 20;

printf(A = %d , B = %d, A, B);

}

*** % %%

Computer Programming 38

- () (

) %-10d

%4d 4

. ()

%4.2d 2

4

l () %ld

Computer Programming 39

#include

void main(void )

{

printf(:%d:\n,123);

printf(:%2d:\n,123);

printf(:%10d:\n,123);

printf(:%-10d:\n,123);

}

:123:

:123:

: 123:

:123 :

float pi = 3.14592;

printf(" ",pi);

Computer Programming 40

printf

\" Double Quotes (")

\' Single Quoat (')

\\ back slash (\)

\nnn ASCII

\041 "!"

\0xnn \f form-feed

\a \n

\b back space \t TAB

\r Carriage return