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CSIT121 Exam study Questions & 100% Solutions (Verified Answers
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CSIT121 Exam study Questions &100% Solutions (Verified Answers)
Declarations - ✔✔The part of the program that tells the compiler the names of memory
cells in a program needed in the function, commonly data requirements identified during
problem analysis.
Executable statements - ✔✔Derived statements from the algorithm into machine language and
later executed.
Reserved Words - ✔✔➢Is defined as the word that has special meaning in C and cannot be used for
other purposes.
Examples: int, void, double, return, main
/* */ - (slash asterisk) - ✔✔used to enclose a single line remarks
" - (double quotation) - ✔✔used to display series of
characters and initializing string constants.
; - (semicolon) - ✔✔statement separator
, - comma - ✔✔used to separate one variable to another
= (equal sign) - ✔✔used as assignment operator
' (single quotation ) - ✔✔used for initializing character expression
& - (ampersand) - ✔✔used as address operator
, {} - (open/close curly brace) - ✔✔denotes the beginning and end of the program
Variables - ✔✔Are like containers in your computer's memory
• You can store values in them and retrieve or modify them when necessary.
Variables - ✔✔Associated with a memory cell whose value can change as the
program executes.
Variable Declaration - ✔✔Statements that communicate to the C compiler the names of all
variables used in the program and the kind of information stored in each variable
• Also tells how that information will be represented in memory
Data Type - ✔✔A set of values and a set of operations that can be performed on those values
void - ✔✔signifies values that occupy 0 bit and have no value. You can
also use this type to create generic pointers
pointer - ✔✔does not hold information as do the other data types. Instead, each one contains
the address of the memory location
Constants - ✔✔-- Identifiers that are having a constant value all throughout the program
execution -- also fixed values that may not be altered by the program
const keyword - ✔✔Used to create a read only variable. Once initialized the value of the
variable cannot be changed
but can be used just like any other variable.
Assignment Operator - Equal sign ( = ) - ✔✔The most basic assignment operator where the value
on the
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