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

Harvard mark-I and the bug, The next important effort in the direction of d...

The next important effort in the direction of devising an electromechanical computer was made at Harvard University mutually sponsored by IBM and Department of UN Navy, Howard Aike

Define the state and instance of properties of object, Define the state and...

Define the state and instance of properties of object A state encompasses all properties of object along with values of each of these properties. An instance is a concr

Data alignment in arrays, Q. Data Alignment in Arrays? Arrays are align...

Q. Data Alignment in Arrays? Arrays are aligned to templates by ALIGN directive. ALIGN directive is used to align elements of various arrays with one another denoting that they

Describe about physical systems, Q. Describe about Physical Systems? Ph...

Q. Describe about Physical Systems? Physical Systems are tangible entities which may be dynamic or static.   Computer Systems, Buildings,Vehicles etc. are illustrations of p

Compute physical address of data byte, Q. Compute Physical address of data ...

Q. Compute Physical address of data byte? Offset of data byte = 0020h Value of data segment register (DS) = 3000h Physical address of data byte   This computation

What are the two ways in which the system using cache, What are the two way...

What are the two ways in which the system using cache can proceed for a write operation? Write by protocol technique Write-back or Copy-back protocol method

Perform binary subtraction on following, Q Perform Binary Subtraction on fo...

Q Perform Binary Subtraction on following: 1) 1101-1000 2) 111.11-101.1 3) 1101.1-1010.01 Q Perform Binary Multiplication & Division on following: 1) 16*2.75 2) 1

Assembly lenguange , what is the work of pin daigram in 8086 microprocessor...

what is the work of pin daigram in 8086 microprocessor in assembly

What is test factory, Rational Test Factory is a component-based testing to...

Rational Test Factory is a component-based testing tool that automatically produces TestFactory scripts according to the application's navigational structure. TestFactory is integr

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