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49 Cards in this Set
- Front
- Back
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5 component of a computer
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Processor-CPU
Input devices output devices main memory secondary memory |
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Hardware
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acutal physical machines
pcs work stations mainframes |
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software
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operating systems
programs |
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Bit
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a binary digit of 0 or 1
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byte
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8 bits of information
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compiler
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converts code to binary digits
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High level language
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C++ designed to be easily written and read by humans
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machine language
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0's and 1's
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Algorithm
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A sequence of precise instructions which leads to a solution
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Software Life Cycle
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Problem definition
Design of software Implementation(coding) Testing Maintenence and evolution of the system obsolete |
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Truth tables
AND |
both must be true
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Truth tables
OR |
1 must be true
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Truth Tables
NOT |
Not true==False
Not False== true |
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nested If-Else
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statements within if-else
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multi-way if else
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more than 2 branches
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switch statement
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another way to multi brach
includes case statements |
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top down design
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breaking everything into smaller and smaller subtasks/subprograms
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Predefined function
sqrt(9.0)==3 |
<cmath>
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predefined functio
pow(2.0,3.0)==8 |
<cmath>
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predefined function
fabs(-7.5)=7.5 |
<cmath>
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predefined function
ceil(3.2)==4.0 |
<cmath>
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predefined function
floor(3.9)==3.0 |
<cmath>
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predefined function
abs(-7) |
<cstdlib>
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predefined fuction
labs(-70,000)==70,000 |
<cstdlib>
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Function
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nake of function to avoid using predefined
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call by value
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substitutes variables for values
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program error
syntax |
violations in language (ommiting a semicolon)
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runtime error
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error detected when program is run(division by zero)
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logics error
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putting a + when meaning a *
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indentifiers
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used as names for variables in C++ program
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declarations
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telling compiler what kind of data will be stored in variable
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constant
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number_of_bars==37
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unintailized
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variable that has not be given a value
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int
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stored as exact value
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double
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stored with 14 or more digits of accuracy
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char
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characters
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long
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like int for larger integers
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float
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like double for larger integers
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bool
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used in looping statements(T of F values) like branching
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!=
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not equal to
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&&
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both statements are true
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!(x<y)
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x is not greater than y
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||
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or operator
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%
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modulo remainder operator
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//
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comments
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blocks
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blocks are enclosed by braces variables declared are local to the block
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local variables
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variables declared in the main part of a program
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global named constant
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naming a constant at the beginning of a program accessable to all function definitions
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function overloading
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when giving 2 or more functions the same name extra care must used
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