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

Describe message passing model, Q. Describe Message Passing Model? In ...

Q. Describe Message Passing Model? In message-passing model there be a set of tasks which employ their own local memories at the time of computation. Many tasks may inhabit on

Read, i read in b.tech 3year.i can go to hadrabad becouse read of branch p...

i read in b.tech 3year.i can go to hadrabad becouse read of branch parer.why the best instituies in hadrabad in purpus gate and branch paper

What are the steps in executing the program, What are the steps in executin...

What are the steps in executing the program? 1.Fetch 2.Decode 3.Execute 4.Store

Determine the method for updating the main memory, The method for updating ...

The method for updating the main memory as soon as a word is removed from the Cache is known as  (A) Write-through                  (B) write-back   (C) protected write

Define hex directive, Q. Define HEX directive? HEX: HEX directive enabl...

Q. Define HEX directive? HEX: HEX directive enables the coding of hexadecimal values in body of the program. That statement directs assembler to treat tokens in source file wh

How many words can be acquired by the word universal, How many words can be...

How many words can be acquired by arranging the letters of the word 'UNIVERSAL' in different way? In how many of them  (i)  E, R, S takes place together (ii)  No two of the

Determine the advantages of sixth generation computers, Determine the advan...

Determine the advantages of sixth generation computers One of the major dramatic changes in sixth generation will be the explosive growth of wide area networking. Network bandw

Explain the acceptance and request determination, Explain the Acceptance an...

Explain the Acceptance and Request Determination As we have learned, much of the overhead in client-server interaction occurs in the CSInteface, either client or server. It is

Give the syntax of if-else statement, Give the syntax of "if-else" and "sw...

Give the syntax of "if-else" and "switch" statements and explain. if else This is used to decide whether to do something at a special point, or to decide between two courses

Write a bash-c shell script, Write a BASH/C shell script which takes a name...

Write a BASH/C shell script which takes a name of a directory as a command line argument, and prints unique login name of the users having files in that directory. Your code should

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