programming in c - 04 - output to the console

8/17/2019 Programming in C - 04 - Output to the Console

1/40

Copyright © BlueSignet LLC. All rights reserved. For more visit WiBit.Net

Programming Output to the

http://www.wibit.net/http://www.wibit.net/


2/40


Some Ways to Print Text

putchar

• Writes a character in the current position

puts

• Writes a C String to Standard Output (stdo

and appends a new line character (\n)

printf

• Writes data to Standard Output that is form

based on function arguments



3/40


Some Ways to Print Text: putchar



4/40


Some Ways to Print Text: putchar

Hello!



5/40Copyright © BlueSignet LLC. All rights reserved. For more visit WiBit.Net

Some Ways to Print Text: puts




Some Ways to Print Text: puts

Hello!

How are you today?




Some Ways to Print Text: printf





Hello!

How are you today?





What will happen if you compile this co





What will happen if you compile this co

>gcc -o Program.exe Program.cProgram.c: In function `main':

Program.c:4: warning: passing arg 1 of `printf' make

from integer without a cast

>





How to fix this



12/40



How to fix this



13/40



Common formatting strings

Format String Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer

%x or %X Unsigned Hex Integer

S W t P i t T t i tf



14/40



Basic syntax

printf(, param, ..)




15/40



Basic syntax

printf(, param, ..)

printf(“%i”, 20);

printf(“%i %i %i”, 20, 10, 50);




16/40



Basic syntax

printf(, param, ..)


printf(“%i %i %i”, 20, 10, 50);




17/40



Basic syntax

printf(, param, ..)


printf(“%i %i %i”, 20, 10, 50);




18/40



Basic syntax

printf(, param, ..)


printf(“%i %i %i”, 20, 10, 50);




19/40



Basic syntax

printf(, param, ..)


printf(“%i %i %i”, 20, 10, 50);




20/40



Basic syntax

printf(, param, ..)

printf(“This is a string”);

printf(“%s”, “This is a string”);

Formatting Strings



21/40


Formatting Strings

Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer

%x or %X Unsigned HexInteger AA

Formatting Strings



22/40


Formatting Strings

Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Formatting Strings



23/40


Formatting Strings

Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Formatting Strings



24/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer

%x or %X Unsigned HexInteger Integer 1 is: 100

Integer 2 is: 10

Integer 1 is [100]

Integer 2 is [10]

Formatting Strings

Formatting Strings



25/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer 2 is: 10

Integer 1 is [100]

Integer 2 is [10]

Formatting Strings

Formatting Strings



26/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer 2 is: 10

Integer 1 is [100]

Integer 2 is [10]

Formatting Strings

Formatting Strings



27/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer 2 is: 10

Integer 1 is [100]

Integer 2 is [10]

Formatting Strings

Formatting Strings



28/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer 2 is: 10

Integer 1 is [100]

Integer 2 is [10]

Formatting Strings

Formatting Strings



29/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer

%x or %X Unsigned HexInteger PI = 3.140000

Formatting Strings

Formatting Strings



30/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer

%x or %X Unsigned Hex

Integer PI = 3.140000

Formatting Strings

Formatting Strings



31/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer This is a stringThis is also a stri

Formatting Strings

Formatting Strings



32/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer



Formatting Strings

Formatting Strings



33/40


Format

String

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer



g g

Formatting Strings



34/40


FormatString

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer Unsigned integer: 1

g g

Formatting Strings



35/40


FormatString

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer Unsigned integer: 1

g g

Formatting Strings



36/40


FormatString

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer

Integer Value

Hex Value (lowercase)

Hex Value (uppercase)

g g



37/40

Formatting Strings


38/40


FormatString

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer

Integer Value



g g

Formatting Strings



39/40


FormatString

Usage

%c Character

%d or %i Integer

%f Floating Point

%s C String

%u Unsigned Integer


Integer

Integer Value



g g



40/40


Programming

Thanks for

programming in c - 04 - output to the console

Documents