Integer types and their ranges in C Sharp (C#) - Step-by-Step Execution

Concept Flow - Integer types and their ranges

Start

↓

Choose integer type

↓

Check size in bits

↓

Determine range

↓

Use type in code

↓

End

This flow shows how to pick an integer type, check its size, find its range, and use it in code.

Execution Sample

C Sharp (C#)

int a = 100;
byte b = 255;
short c = -32768;
long d = 9223372036854775807;

This code declares variables of different integer types with values at or near their limits.

Execution Table

Step	Variable	Type	Value Assigned	Range Min	Range Max	Valid Assignment?
1	a	int	100	-2,147,483,648	2,147,483,647	Yes
2	b	byte	255	0	255	Yes
3	c	short	-32768	-32,768	32,767	Yes
4	d	long	9223372036854775807	-9,223,372,036,854,775,808	9,223,372,036,854,775,807	Yes
5	b	byte	256	0	255	No - exceeds max
6	c	short	-40000	-32,768	32,767	No - below min

💡 Execution stops after checking valid and invalid assignments for integer types.

Variable Tracker

Variable	Start	After Step 1	After Step 2	After Step 3	After Step 4
a	undefined	100	100	100	100
b	undefined	undefined	255	255	255
c	undefined	undefined	undefined	-32768	-32768
d	undefined	undefined	undefined	undefined	9223372036854775807

Key Moments - 2 Insights

Why can't we assign 256 to a byte variable?

Because byte can only hold values from 0 to 255, as shown in execution_table row 5 where 256 is outside the range.

Why is -32768 valid for short but -40000 is not?

Short ranges from -32,768 to 32,767, so -32768 is valid but -40000 is below the minimum, as shown in execution_table rows 3 and 6.

Visual Quiz - 3 Questions

Look at the execution_table, what is the maximum value a long variable can hold?

A 2,147,483,647

B 255

C 9,223,372,036,854,775,807

D 32,767

💡 Hint

Check the 'Range Max' column for variable 'd' in execution_table row 4.

At which step does the assignment become invalid because the value is too large for the type?

A Step 2

B Step 5

C Step 3

D Step 1

💡 Hint

Look at the 'Valid Assignment?' column in execution_table for the first 'No' entry.

If we assign 0 to a byte variable, what would change in the variable_tracker?

A Value of b after step 2 would be 0

B Value of a after step 1 would be 0

C Value of c after step 3 would be 0

D Value of d after step 4 would be 0

💡 Hint

Variable 'b' is byte type; check variable_tracker column 'After Step 2'.

Concept Snapshot

Integer types in C# include byte, short, int, and long.
Each type has a fixed size and range.
byte: 0 to 255 (8 bits)
short: -32,768 to 32,767 (16 bits)
int: -2,147,483,648 to 2,147,483,647 (32 bits)
long: -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 (64 bits)
Assigning values outside these ranges causes errors.

Full Transcript

This visual execution shows how integer types in C# have specific ranges based on their size in bits. We start by choosing a type, then check its size and range. The code sample assigns values to variables of types int, byte, short, and long. The execution table tracks each assignment, showing if the value fits within the type's range. For example, byte can hold 0 to 255, so 255 is valid but 256 is not. The variable tracker shows how variable values change step by step. Key moments clarify why some assignments fail, like assigning 256 to a byte. The quiz tests understanding of ranges and valid assignments. The snapshot summarizes the ranges and rules for integer types in C#.