C Language.doc

1.

About C Language ఒక

(

క

క

క

క) క

. క

. క ఒక

-

క

.

క

.

  

++



.

'C' language:

Friends 'C' language క

language

Friend's "

Easy programing language .'C' language Dennis Ritchie

1970

Bell Telephone

'C' language

"

(flowchart)"

2.

( ALGORITHM ) (ALGORITHM):

ఒక క

ఒక క

క

"

" (

ఒక general-purpose

)

"

ఒక

ఒక క "

"

ఏ programing language (algorithm)

క

Base ఏ

క

(algorithm) (algorithm) క

క

క

క

క . Language Programining language

(example:c,c++,java..) Example: ఒక Problem

క

ఏ

Problem1: Number

add

(a=2 b=3 c=a+b) ?

solution:

step1: start step2:

(a=2)

step3:

(b=3)

step4:

nembers add

step5: step6: IN ENGLISH

print / display add end

add=a+b

step1: start step2: read first number(a=2) step3: read second number(b=3) step4: add above two number i.e add=a+b step5: diplay / print add step6: end : ఏ

start problem1

steps

step1

start

Slove

Problem

ఏ

.

.

Ending క

start

last step(step6)

.

.

End

problem 2: క

Numbers

a=2 b=3

(find the biggest number from the given two numbrs a=2 b=3) solution:

step1: Start step2: step3:

a=2 b=3

step4:

a>b

step5: correct step6: correct step7:

a క

print

b

print

end

IN ENGLISH step1: Start step2: Read a=2 step3: Read b=3 step4: if a>b = true then step5: display a is big go to step7

step6: else display b is big step7:end : ఏ

start

problem1

step1

start

Reading numbers. a>b .

correct

decide end

next step5

క

decide

step2 & step3 numbers a

step6

. a>b correct b

.

step

.

.

step5

క

step7 క

step6

3.

(FLOW CHAT) (FLOW CHAT): క

క

క .

క

(flowgraph)

boxes

symbols

(operation)box boxes

symbols .ఈ

క క

arrow

Arrow connect

. connect algorithm

figure క

symbols and boxes

(flow chat )

Examples

Example: Problem 1: Number

add

(a=2 b=3 c=a+b) ?

Flow Chat (Draw a Flow Chat Diagram For Addition Of Two Numbers) solution1:

ఏ

:

problem1 .

start step1

start

2 & 3 steps

5 th steps

క ఏ

.

4 step

output

[Rectangle] print

[parallelogram] start

oval క

క

perform .

క

.

values

[parallelogram] addition

.

Ending క

. .

last step

(step6)

క

End

oval

problem 2:

క

Numbers

a=2 b=3 .

Flow Chat

(find the biggest number from the given two numbrs a=2 b=3) solution1:

:

ఏ

problem1 .

start step1

2 & 3 steps

క step

start

క

.

oval

values input [parallelogram]

condition

.

check

. క

4 A

B

క Diamond

CHECK 6 th steps

output

Ending క

start

ఏ

. .

క

End

క

print

[parallelogram]

.

last step (step7)

oval

4.

( Examples on Algorithm )

Example 1: ఒక (1) N

క

Number

add

?

(write an algorith for adding number from 1 to N?)

solution:

step1: start క

step2:ఒక step3: step4:

ఒక

add క

add

క SUM=0

CONDITION CHECK

GOTO STEP 5

క

GOTO STEP 7.

step5: SUM=SUM+N step 6: N=N-1 GOTO step 4. step7:Display SUM step8:

N

end

IF ( N != 0)

IN ENGLISH

step1: start step2:Read N; (N is the value up to we can add) step3:we want add values from 1 to N so take SUM=0; step4:Now we want check condition IF ( N != 0) Then GOTO STEP 5

if else

GOTO STEP 7.

step5: SUM=SUM+N step 6: N=N-1 GOTO step 4. step7:Display SUM step8: end : ఏ

start

step1

start

.step2

add

క add క

next 1 value SUM 0

example N

క

step 5

3

N=N-1

GOTO STEP 4

N

0 క

SUM

value

క

క

0

3 ( SUM=0+3).

( N =3-1) . .

.

.

SUM=SUM+N

SUM 2

క

condition N!=0 check

NEXT STEP

STEP 4

N

.NEXT STEP

step 7 now Step 4

N

1

క

1

3!=0 CORRECT

PERFORM STEP 6

క

క

N =3

problem1

problem

step 2

N

.

STEP4

CONDITION

CHECK

NEXT STEP

STEP 6 SUM

STEP 4 VALUE

PERFORM

N

0 AYE

. క

N =0

step 7

Dispaly

5.

Examples on Flowchart

Example 1: ఒక (1)

LOOPING

N

క

Number

add

?

(write an algorith for adding number from 1 to N?) Solution :

.

: ఏ step1

start start

add

.step2

N

క add క

0

క

step 5

క N

problem

problem

step 2

next 1 value SUM

.

1 0

Arrow

1

N

value

క

క

క .

.NEXT STEP step 7

క

.

example N

క

N =3 3

క

3!=0 CORRECT

PERFORM STEP 6

Arrow

SUM N

GOTO STEP 4 CHECK

SUM 2

STEP 6

Arrow

step 7

PERFORM STEP 4

6..

3 ( SUM=0+3).

STEP 4

SUM

SUM=SUM+N

( N =3-1) .

Arrow NEXT STEP

condition N!=0 check NEXT STEP

0

N=N-1

Arrow

now Step 4

. .

N

LOOPING క

0

VALUE

క

STEP4

. N =0

Dispaly

( C language Introduction ) క

C Language

క

ఏ

data

. క

ఏ

(or ) ఏ

( key )

క )

(

)

.ఈ access

క

.

Language's

3

:

Low Level Language: క

క

.

ఏ

0 , 1 .

క

ఏ

ఒక

.

), 1 (ఒక )

.ఈ

(Memory location Address )

ఏ

1.

( data )

(క

. ఒక

)ఏ

(

క

0 (

Low Level Language ఏ

.

.

క 0, 1

క

.ఈ ,ఒక క

. :

క

ఈ

ఏ

0001 0111 0100 ఈ Low Level Language క 2.

క

క

. క

Middle Level Language : Middle level languages

programs

MOV ADD SUB DIV క

Direct ఈ

క

language

క

క

క

క

.

క

క

/ . ఈ language

High level language

క

GENERAL

programs (C , C++,

computer

High

.

.క

క languages

Machine level

క

.

High level language :

JAVA ... )

ఒక

programs computer

low level

క

3.

, Registers

క

ఈ

.

computer

క

. computer programming Low

.క

Compiler/ Interpreter

( MACHINE LEVEL LANGUAGE / LOW LEVEL LANGUAGE/ BINARY LEVEL LANGUAGE )



.

"C" Language

Program

Low level

"C"

Language

. ఈ Compiler

ALT+F9 Press Create

. ఈ File

Program

Output

High

Level

Low level

Low Level క

.

.

Program

Compiler

High Level Language

Ctrl+F9

Press

Level

Program .

Program

Low

FileName .Obj క

Folder

Output

. Program Extra .

File

క

:

క

:

7.

First Program In C ఏ Programming language

Program

ఒక 

C Language

Write a Algorithm To print a message "HELLO WORLD "?

STEP1: Start Step2:

print HELLOWORLD

STEP3: END Same 

"C " Write a Program to print Hello world message At output ?

#include < stdio.h > void main() { printf(" Hello world "); } Starting step "start " క main().

STEP2 print HELLO WORLD

printf(" hello world "); Use } use

"C " Language

.

క

STEP3 End

Stating Step Void "C " Language క

.

printf syntax: printf (" ఈ

's

output

Examples On printf : 

printf(" hai ") ; -----------------> hai

output

");

Ending

.



printf(" siva naadh baazi is great "); --------------------> sivanaadh baazi is

output 

printf("your name");----------------------> your name

" Printf work

printf

program already stdio.h ఈ file

void main() ఈ program

#include

program program

compilation

printf

compilation

Press

Errors

Output

0

Program .

Output

ALT+F5 press

. .

CTRL+F9 press

Output

OUTPUT

program

ALT+F9

Error's

Output

CTRL+F9 PRESS

include

"

Include

compile

ERRORS

output

OUTPUT

.

output

.

Output

picture

pro1

ok

.

ఒ

. ఈ output

. Picture

PROGRAM

compile .

Execute

output

pro2

OUTPUT Program

Hello world Hello world

Hello world

print ఒ

printf

.

. ఒ

.

output ఒ

First Hello world Output

Output. Output

print

Program Output. .

previous program output statement

clrscr() -------->

program

Hello world

program Output

" clrscr() "

print

clear screen

clrscr() work

present program output clear

.

. meaning

program

Include

.

program "

conio.h " . Ctrl+F9 Press . Output screen

ఒ statement

Ending Bracket

Output Ctrl+f9 press

.

output Screen " getch () "

getch () ------>

Get character

meaning

Output Screen

key press

. getch () ------> work

program

Include

.

program " conio.h " .

Final

Program

ఈ

#include < stdio.h > #include < conio.h > void main() { clrscr(); printf(" Hello world "); getch(); }

output

output

ఒ

print

......

8.

C Programing Rules Rules

.

English

Grammer

" C " Language Rules

.

C Language Rules : 1.

"C"

Progarm

Starting

point

main()

Function

Note: main()

#include

(

Functions

program

)

Only

Work

.

Example

: printf(""); program Stdio.h

stdio.h 2.

include

program Starting Point

main() function

.( English

vundhi printf work main()

statement SEMI COLON ;

ఒక sentence End

full stop . ఏ

క

END

semicolon

) 3.

main() Function

Begining Bracket and Ending Bracket

ea statements ina 4.

.

.

main() Function

#include statements

Header files

.

క

5.

Program

Example:

filename

.(dot)c

save

program1.c pro.c abcdfeg.c

6.

Progarm Run

Complie CTRL+౯ ( Output

ALT+F9 )

-----------------9.Printf



Write A Program To Print Your Name and Age At Output

#include #include

void main() { clrscr();

printf("sivanaadh baazi"); printf("22"); getch(); }

output ఈ sivanaadhbaazi 22 output ఒ

ఒ

output

.

output

ఒ

(

)

ఒ printf statement

.

.

..

#include #include void main() { clrscr(); printf("sivanaadh baazi 22"); getch(); }

ఈ

output

ఒ

ఒ

ఒ

ఒ .

same

. ...

" C Language " ..

ఒ

Printf Statement

\n --ఒ 

(New Line ) ఒ

Write A program To print Your Name And Age Line By Line..

\n (New line) Statement

1st printf Statement

output

1st printf

ఈ

ఒ ఒ printf statement

\n ( New Line )

new line

( \n )

ఒ

\n

ఒ

\n ( New Line )

Examples Printf

output

ఈ output

. \n ( New Line )

..

printf statement output

..............



Write a Program To print U R Bio-Data at output

#include #include void main() { clrscr(); printf("name=sivanaadh baazi"); printf("age=22"); printf("gender=male"); printf("father name=satyanarayana"); printf("mother name= malleswari"); printf("qualification=BTech");

getch(); }

ఈ

Output ఈ

output: name=sivanaadh baazi age=22 gender=male father name=satyanarayana mother name=malleswari qualification=BTech ఒ

ఒ

#include #include void main() {

\n ( New line )

.

clrscr();

printf("name=sivanaadh baazi \n"); printf("age=22"); printf("gender=male \n "); printf("father name=satyanarayana"); printf("mother name= malleswari \n"); printf("qualification=BTech"); getch(); }

New line ( \n )

1,3,5 printf statements

Ouput: name=sivanaadh baazi age=22 gender=male father name=satyanarayana mothername=malleswari qualification=BTech

printf statement

New Line

...............

:) :) :)

10.Printf

continue Character

Escape Sequence

Newline

\n

Horizontal tab

\t

క

Vertical tab

\v

Backspace

\b

Carriage return

\r

Alert

\a

Backslash

\\

Question mark

\?

Single quotation mark

\'

Double quotation mark

\"

క

printf క

. ఈ

క

క

క

\n

.. \n

.

Escape Sequence

.

table

ఈ

.

Horizontal Tab ( \t ) : క

printf .

Program on Horizontal Tab :

\n \t

ఒక

(space )

.

Output :

C Language Show videos in youtube link: http://www.youtube.com/watch?v=RPJx7mCYXzU&playnext=1&list=PLA8E0AD777C0B9827&feature=re sults_main