How putchar function is used within a c program, Computer Engineering

Assignment Help:

How putchar function is used within a C Program ?

The following program reads each character in the first line of input entered at the terminal's keyboard. It uses putchar to display, on the terminal's screen, each character from the line.

#include

int c;

main()

{

puts("Enter a line of input.");

while ( (c = getchar()) != '\n' ) /* Look for newline */

{

putchar(c);

}

putchar('\n');

}

putchar writes one character to the standard output file, stdout. But getchar

Reads and returns the next character from the standard input file, stdin.

Syntax

#include

int getchar(void);

The getchar macro reads the next character from the preopened file pointed to by stdin. The file pointed to by stdin is usually associated with the terminal's keyboard. If the file is at end- of-file, getchar sets the end-of-file indicator for stdin. If a read error occurs, the macro sets the error indicator associated with stdin. If the file is at end-of-file or a read error occurs, getcharsets the external variables errno and os_errno to the appropriate error code number.

The getchar macro returns an integer value representing the next character from stdin. If a read error occurs or the file is at end-of-file, getchar returns EOF.

 


Related Discussions:- How putchar function is used within a c program

Explain about flip-flops, Explain about Flip-Flops  Flip-Flops are also...

Explain about Flip-Flops  Flip-Flops are also called bistable multivibrator.  A flip-flop is capable of storing 1 bit of binary data.  It has two stable states- 'one' and 'zero

Explain the term- signals, Explain the term- Signals -  Signals are use...

Explain the term- Signals -  Signals are used for communication between components -  Signals can be seen as real, physical signals -  Some delay should be incurred in a

Masters and slaves, The devices on the I2C bus are either masters or slaves...

The devices on the I2C bus are either masters or slaves. The master is the device that is responsible for driving the SCL clock line, while the slaves are the devices that respond

Illustrate program on hypothetical machine, Q. Illustrate program on hypoth...

Q. Illustrate program on hypothetical machine? The program given in figure above is a hypothetical program which performs addition of numbers stored from locations 2001 onwards

How to get the column count of a report, How to get the column count of a r...

How to get the column count of a report? SY-LINSZ system variable gives the column count (line size) and SY-LINCT for line count.

What is public key cryptography, What is Public Key Cryptography Publi...

What is Public Key Cryptography Public-key cryptography is a form of modern cryptography which permits users to communicate safely without lastly agreeing on a shared secret

What are two methods of modifying sap standard tables, What are two methods...

What are two methods of modifying SAP standard tables? Append Structures and Customizing Includes.

What is a map, What is a Map? A Map is an Array, which having the addre...

What is a Map? A Map is an Array, which having the addresses of the free space in the swap device that are allocatable resources, and the number of the resource units available

What is text editor, What is text editor? It is used for entering and e...

What is text editor? It is used for entering and editing application programs. The user of this program interactively implements command that permit statements of a source prog

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd