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

Hat are the advantages and disadvantages of hardwired, What are the advanta...

What are the advantages and disadvantages of hardwired and micro programmed control? Advantages of hardwired control i. Operate at high speed ii Each state of this coun

Iterative deepening search, Iterative Deepening Search: So, breadth fi...

Iterative Deepening Search: So, breadth first search is always guaranteed to find a solution (if one exists), actually it eats all the memory. For the depth first search, ther

Dialog-task updates, Dialog-task updates are Synchronous updates.

Dialog-task updates are Synchronous updates.

What is class and class diagram, What is class, class diagram? An objec...

What is class, class diagram? An object is an instance of a class. Class explains a group of objects with similar properties (attributes), behaviour (operations), kinds of rela

i open an ms access database, How can I open an MS Access database that ha...

How can I open an MS Access database that has been converted to a current version? Ans) MS Access is not backwards compatible. A workaround to share tables among different versi

Binary resolution, Binary Resolution: However we saw unit resolution f...

Binary Resolution: However we saw unit resolution for a propositional inference rule in the previous lecture:  (A?  B,   ¬B) /A Thus we can take this a little further to

Example to show a single digit, Q. Example to show a single digit ? Dis...

Q. Example to show a single digit ? Displaying a single digit (0 to 9) Presume that a value 5 is stored in BL register then to output BL as ASCII value add character ‘0' to

State the term in detail $strobe, State the term in detail $strobe $str...

State the term in detail $strobe $strobe. This task is very similar to $display task except for a slight difference.  If many other statements are executed in same time unit as

Data stream and instruction stream-flynn’s classification, Data Stream an...

Data Stream and Instruction Stream The term 'stream' refers to an order or flow of either data operated or instructions on by the computer. In the complete chain of instructi

Define variants of turing machine, Define variants of Turing Machine?  ...

Define variants of Turing Machine?  Variants are  Non deterministic turing machine.  Mutlitape turing  machine.  Enumerators

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