the purpose of putchar function? How putchar is used within C program? Compare putchar with getchar function.

putchar() is a standard library function defined in stdio.h header file. It is used for printing one character on the screen at a time.

The syntax of this function is,

putchar(ch);

where, ch is a char type variable.

The following program shows how to use this function.




#include
main()
{
char ch = 'A';
putchar(ch);
}

Upon execution this program prints out A on screen.

getchar() is standard library function to get one character from keyboard. The getchar() function echo's the character on screen followed by enter key. The syntax of this function is

ch = getchar().

Both the functions are defined in stdio.h header file.

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More Useful Topics...

 

History Of C..

In the beginning was Charles Babbage and his Analytical Engine, a machine
he built in 1822 that could be programmed to carry out different computations.
Move forward more than 100 years, where the U.S. government in
1942 used concepts from Babbage’s engine to create the ENIAC, the first
modern computer.
Meanwhile, over at the AT&T Bell Labs, in 1972 Dennis Ritchie was working
with two languages: B (for Bell) and BCPL (Basic Combined Programming
Language). Inspired by Pascal, Mr. Ritchie developed the C programming
language.

My 1st Program...


#include
#include
void main ()
{
clrscr ();
printf ("\n\n\n\n");
printf ("\t\t\t*******Pankaj *******\n");
printf ("\t\t\t********************************\n");
printf ("\t\t\t\"Life is Good...\"\n");
printf ("\t\t\t********************************");
getch ();
}

Next Step...


#include
#include

void main ()
{
clrscr ();
printf ("\n\n\n\n\n\n\n\n");
printf ("\t\t\t --------------------------- \n\n");

printf ("\t\t\t | IGCT, Info Computers, INDIA | \n\n");
printf ("\t\t\t --------------------------- ");

getch ();

}

Hits!!!