1. The document discusses the basics of C programming including compiling, linking, header files, main functions, data types, variables, input/output functions like printf, putchar, getchar, gets, and getche. 2. It explains how to use functions like printf to output strings and variables, putchar and getchar to output and input single characters, and gets and getche to input strings from the keyboard. 3. Examples are provided showing how to declare and assign variables, use input and output functions, and take user input using functions like getchar, getche, and gets.

2. cos)
Windows)

3. BCLP
B

5. Source Program)
c
Compile)
work.c
Build)

6. Link)
printf()
exe

8. Header
File)
main( )
h.
header_name
printf
include <stdio.h>

9. Main
Function)
main( )

10. main {}
2.

11. identifier)
address)

12. data_type
Var

13. var_type
Var name
Data

14. input)
process)
output)
printf ( )

15. String _format
d
Address_list
Ampersand)

16. expreeion
var
expreeion

17. -
char)
putchar ( )
getch ( )
5.3
5.1
5.2
5.4
putchar ( )
Putchar_argument
getchar ( )
getche ( )

18. -
A’
char
word1
word2
char word1=‘A’ , word2=‘1’
2.
putchar(word1); putchar(word2);
A1

19. getchar ( )
Enter

20. -
getchar ()
Printf (“Key 1 Character=”) ;
Word = getchar ( ) ;
a
Enter

21. -
word
a(
word)
Printf (“You key Character is =%cn”,word) ;
getch ( )
Enter

22. -
getch ()
printf (“Key 1 Character =” ) ;
word = getch ( ) ;
a

23. -
word
a(
word)
printf (“Key 1 Character =%cn”,word ) ;
5.4
getche ( )
Enter

24. -
getche ( )
printf (“Key 1 Character =” ) ;
word = getcher ( ) ;
a
Enter

25. String)
char[n]
puts()
puts()
word
Char word [15] = “*Example*”;

26. gets( )
Enter
get ( )
Enter