3. Systems Implementation
Implement the
security measures
as designed.
4. Systems Operation, Evaluation, and
Control
Operate the system
and assess its
effectiveness and
efficiency. Make
changes as
cir
Review of Lecture 5
Looked at Fortran commands in more detail
Control through if and do statements.
Logical expressions in Fortran .eq. .ne. .gt. .ge.
.lt. .le.
Logical expressions .not. .and. .or
Review and todays lecture
So far we have covered most of the features of Fortran 77
although there are still a number of structures and methods that
we have not explored.
It is important to remember
Mathematica
History
Developed between 1986-1988 at Wolfram Research
Mathematica 1.0 released in 1988
Mathematica 2.0 released in 1991
Mathematica 3.0 released in 1996 (typesetting)
Mathematica 4
12.010 Computational Methods of
Scientific Programming
Lecturers
Thomas A Herring
Chris Hill
Review of Lecture 2
Examined computer hardware
Computer basics and the main features of programs
Program
6.851 Advanced Data Structures (Spring12)
Prof. Erik Demaine
Problem 8
Sample solution
Signature compression. We will rst multiply the input word x by an integer m which will
arrange h1 , h2 , , hk in
Problem M20
A 45 strain gauge rosette attached to the surface of an aluminum alloy wing skin
panel measures the following strains:
ea = -0.0025, eb =0.0020, ec=-0.0040
The orientation of the gauges is
Summary
Finished up C with structures and memory management
Started with C+
C+ is C with the addition of classes
Class is a formal way to think about good program design.
Modularity, encapsulatio
Summary
LAST LECTURE
Basic C
Syntax v. Fortran
THIS LECTURE
Examined C-pointers
File Input/Output and the routines for formatted reads and
writes
Compiling C routines
The C preprocessor cpp.
In UNIX, What is a special file? (5 points) What is the major advantage of having them?
(5 points)
A special file is not a file but a device that has a name obeying UNIX pathname
conventions for files
Review of last lecture
Start examining the FORTRAN language
Development of the language
Philosophy of language: Why is FORTRAN still used
(other than you cant teach an old dog new tricks)
Basic st
C History and Background
Origins 1973, Bell Labs
Public K&R C The C Programming Language, [Kernighan 1978]
ANSI C standardized 1989, X3.159-1989
Ritchie C is quirky, flawed and an enormous success
ht
Introduction
anguages to e co ered
ortran Matla Mathematica C C
P thon and
graphics and ad anced parallel and P
computing topics
Specific ersions
S ortran
ith ortran 0 differences
Matla
elease 2011a
S
Review of Lecture 4
Looked at Fortran commands in more detail
Looked at variables and constants
IO commands:
Open/Close
Read/Write
Format
Started looking at character strings
09/22/2011
12.010
18.415/6.854 Advanced Algorithms
Problem Set Solution 4
Lecturer: Michel X. Goemans
1. In class, we have seen Klein's cycle cancelling algorithm for the Min Cost Circulation Problem (MCCP). This algor
Summary
Today we finish up C and start C+
Final C topics
Structures: A method for grouping like variables
together
Memory management
Start of C+
History
Ideas of classes and objects
Examples t
Review Lecture 01
Language characteristics:
Compiled versus interactive
Numeric versus symbolic
Algorithm development
Statement of problem
Algorithm design
Algorithm implementation
Verificatio