1. Introduction to Programming
Lecture 35

2. Input/Output Streams

3. File Input/Output

4. Stream

5. scanf ( ) ; printf ( ) ;

6. Stream
Stream is an ordered
sequence of bytes

7. Stream Input/Output

8. Input stream object
cin
Output stream object
cout

9. Stream Operators
>>
<<

10. Example
int i ;
char c ;
cin >> i ;
cin >> c ;

11. Every stream has:
A source
A destination

12. State

13. Example
int i , j ;
cin >> i >> j ;
cout << i / j ;

14. Formatted Input / Output

15. Member Functions

16. cin.get ( ) ;

17. c = cin.get ( ) ; cin.get ( char c ) ;

18. cin.read ( char * buffer , streamsize n )
Integer type to express counts in streams
More than one character is read

19. <<

20. cout.put (char c ) ;

21. #include <iostream.h>

22. iomanip.h

23. cerr clog

24. Buffered Input/Output

25. Buffer

26. flush

27. “\n”

28. cout << endl ;

29. caux cprn

30. cout << “The value of the first integer is” << i ;

31. Stream Insertion Operator

32. ostream & ostream :: operator << ( char * text )

33. Stream Extraction Operator

34. cin >> i >> j ;
Example
int i , j ;
cin >> i >> j ;

35. cin.getline ( char * buffer , int buff_size , char delimiter = ‘\n’ )
100

36. cin.unget ( ) ; cin.peek ( ) ;

37. cout.put ( char ch ) ; cout.write ( char * str , int n ) ;

38. Example
char name [ 60 ] ;
cin >> name ;
cout << name ;

39. Example char name1 [ 30 ] , name2 [ 30 ] ;
cin >> name1 >> name2 ;

40. In Today’s Lecture How to create our own object
We learnt
Input / Output Stream
cin , cout , cerr , clog
How to create our own object
Overload Stream Operators