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Questions and Answers
What is the purpose of the Diamond symbol in a flowchart?
What is the purpose of the Diamond symbol in a flowchart?
What is the function of the Arrow symbol in a flowchart?
What is the function of the Arrow symbol in a flowchart?
What is the purpose of the Oval symbol in a flowchart?
What is the purpose of the Oval symbol in a flowchart?
What is the function of the Circle symbol in a flowchart?
What is the function of the Circle symbol in a flowchart?
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What is the purpose of the Parallelogram symbol in a flowchart?
What is the purpose of the Parallelogram symbol in a flowchart?
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What is the primary advantage of using a list data type?
What is the primary advantage of using a list data type?
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What is the main difference between an array and a record?
What is the main difference between an array and a record?
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What can occur as a result of implicit data type conversion?
What can occur as a result of implicit data type conversion?
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What is the purpose of explicit data type conversion (casting)?
What is the purpose of explicit data type conversion (casting)?
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What happens when an int value is added to a float value in an operation?
What happens when an int value is added to a float value in an operation?
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What is the main advantage of using a record (structure) data type?
What is the main advantage of using a record (structure) data type?
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Why is it important to be careful with data type conversions?
Why is it important to be careful with data type conversions?
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Study Notes
Flowchart Symbols
Introduction
- Flowcharts use standardized symbols to represent different actions and decisions
- These symbols are used to create a visual representation of a program or algorithm
Symbols and Their Meanings
-
Oval: Start/End symbol
- Indicates the beginning or end of a program or subroutine
-
Rectangle: Process symbol
- Represents a single action or process
-
Diamond: Decision symbol
- Used to represent a decision or branch in the program
-
Parallelogram: Input/Output symbol
- Represents user input or output operations
-
Arrow: Direction of Flow symbol
- Indicates the direction of flow between symbols
-
Circle: Connector symbol
- Used to connect different parts of the flowchart
Key Points
- Each symbol has a specific meaning and use in creating a flowchart
- Correct use of symbols is essential for creating a clear and accurate flowchart
- Flowcharts can be used to plan, visualize, and communicate algorithms and programs
Flowchart Symbols
- Flowcharts use standardized symbols to represent different actions and decisions, creating a visual representation of a program or algorithm.
Symbols and Their Meanings
- Oval: Start/End symbol, indicating the beginning or end of a program or subroutine.
- Rectangle: Process symbol, representing a single action or process.
- Diamond: Decision symbol, used to represent a decision or branch in the program.
- Parallelogram: Input/Output symbol, representing user input or output operations.
- Arrow: Direction of Flow symbol, indicating the direction of flow between symbols.
- Circle: Connector symbol, used to connect different parts of the flowchart.
Key Points
- Each symbol has a specific meaning and use in creating a flowchart.
- Correct use of symbols is essential for creating a clear and accurate flowchart.
- Flowcharts can be used to plan, visualize, and communicate algorithms and programs.
Composite Data Types
- Arrays store a collection of values of the same data type in contiguous memory locations.
- Each element in an array has a unique index or subscript, usually starting from 0.
- Example: an
ages
array stores 5 integer values.
Records (Structures)
- Records store a collection of values of different data types together.
- Each element in a record has a unique field name.
- Example: a
student
record with fieldsname
,age
, andgrade
.
Lists
- Lists are dynamic collections of values of the same data type.
- Lists can grow or shrink in size as elements are added or removed.
- Example: a
scores
list stores student scores.
Data Type Conversion
Implicit Conversion
- Implicit conversion is the automatic conversion of a value from one data type to another.
- Example: assigning an
int
value to afloat
variable. - May result in loss of precision or data.
Explicit Conversion (Casting)
- Explicit conversion (casting) is the manual conversion of a value from one data type to another.
- Example:
(float) x
to convert anint
value to afloat
. - Used to avoid implicit conversion issues.
Type Coercion
- Type coercion is the automatic conversion of a value to match the dominant data type in an operation.
- Example: an
int
value added to afloat
value will coerce theint
to afloat
. - Important to be careful with data type conversions to avoid data loss or unexpected results.
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Description
Learn about the standardized symbols used to create flowcharts, including the oval, rectangle, and diamond symbols, and their meanings.