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

What is delay system, What is Delay System? Delay System: A class of ...

What is Delay System? Delay System: A class of telecommunication networks like data a network that places the call or message arrivals in a queue in the lack of resources, an

Illustrate the benefits of functional model, Illustrate the benefits of Fun...

Illustrate the benefits of Functional model Functional model shows how values are computed. This model describes decisions or object structure without regard for sequencing. I

#title.sequential circuit, design modulo 12 up synchronous counter using t ...

design modulo 12 up synchronous counter using t flip flop

What are priority queues, What are priority Queues? There are many queu...

What are priority Queues? There are many queues in which we can insert items or delete items from any of the position based on some property. Now, those queues based on the pro

Is it possible to pass data and include program explicitly, Is it possible ...

Is it possible to pass data to and from include programs explicitly? No.  If it is needed to pass data to and from modules it is needed to use subroutines or function modules.

Importance of artificial intelligence, Businesses are interested in AI bec...

Businesses are interested in AI because of the characteristics it offers that no other systems type offers. That is AI ability to: a. Preserve Intelligence and Knowledge: C

Integrated test result, COGNITIONS Mr. X exhibits a generally high-quali...

COGNITIONS Mr. X exhibits a generally high-quality level of cognitive and intellectual functioning, as evidenced by his performance on the MMSE-2 and WAIS-IV. His one weakness w

What is an interface and what is an abstract class, What is an interface an...

What is an interface and what is an abstract class? Please, expand by examples of using both. Explain why.   In a interface class, all methods are abstract without execution w

Invariant of the class, What are the conditions that have to be met for a c...

What are the conditions that have to be met for a condition to be an invariant of the class? Ans) ? The condition should hold at the end of each constructor. ? The conditi

Why we need to construct state transition diagram, Why we need to construct...

Why we need to construct state transition diagram Basically you need to construct a state transition diagram for each object with important behaviour. You need not construct on

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