ICOM%204015%20Advanced%20Programming

1
ICOM 4015 Advanced Programming

• Lecture 1
• Computer/Human Interaction
• (Part I)
• Reading Chapter 11
• (Up to I/O manipulators)

Prof. Bienvenido Velez
2
Computer/Human InteractionOutline

• Administrivia
• Output Streams
• Input Streams

3
Administrivia

• Read Chapters 1-2 DeitelDeitel
• Lab meeting times changed
• Please sign up for a lab
• No labs this week
• Tas email email addresses
• Jose Torres (jet_at_amadeus.uprm.edu)
• Jairo Valiente (jvaliente_at_amadeus.uprm.edu)
• Accounts _at_ amadeus ready
• USER Ids derived from student

4
Example 1
include ltiostreamgt main() for(int i0
ilt10 i) for(int j0 jlti j)
cout ltlt "" cout ltlt endl
example1.cc


output
5
Example 2
include ltiostreamgt main() for(int i0
ilt10 i) for(int j0 jlti j)
cout ltlt "" cout ltlt " " ltlt i ltlt "
stars" cout ltlt endl
example2.cc
0 stars 1 stars 2 stars 3 stars 4
stars 5 stars 6 stars 7
stars 8 stars 9 stars
output
6
OutputStream insertion operator
returns an output stream
cout ltlt expression
stream insertion operator
output stream
argument expression
7
Example 3
include ltiostreamgt main() int entered
cout ltlt Enter number of rows " cin gtgt
entered for(int i0 iltentered i)
for(int j0 jlti j) cout ltlt ""
cout ltlt " " ltlt i ltlt " stars" cout ltlt
endl
example3.cc
bvelez_at_amadeus gtgt example3 Enter number of
rows 7 0 stars 1 stars 2 stars 3
stars 4 stars 5 stars 6
stars bvelez_at_amadeus gtgt
shell
8
Example 4
include ltiostreamgt main() while (true)
cout ltlt " Enter number of rows (-1 to end) "
int entered cin gtgt entered if
(entered -1) break for(int i0
iltentered i) for(int j0 jlti j)
cout ltlt "" cout ltlt " " ltlt
i ltlt " stars" cout ltlt endl
example4.cc
bvelez_at_amadeus gtgt example4 Enter number of
rows(-1 to end) 5 0 stars 1 stars 2
stars 3 stars 4 stars Please enter an
integer (-1 to end) -1 bvelez_at_amadeus gtgt
shell
9
InputStream extraction operator
returns an input stream
cin gtgt variable
stream extraction operator
input stream
argument expression