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Craps Game and Storage Classes in C Programming, Slides of Computer Fundamentals

Jaipur National UniversityComputer Fundamentals

An example of a craps game simulation and explains the concept of storage classes in c programming. The craps game rules are outlined, and the program output is shown. Additionally, the document covers the three types of storage classes: automatic, static, and external, as well as their respective properties such as storage duration, scope, and linkage.

Typology: Slides

2011/2012

Uploaded on 07/31/2012

karthik
karthik 🇮🇳

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5.10 Example: A Game of Chance
• Craps simulator
• Rules
– Roll two dice
• 7 or 11 on first throw, player wins
• 2, 3, or 12 on first throw, player loses
• 4, 5, 6, 8, 9, 10 - value becomes player's "point"
– Player must roll his point before rolling 7 to win
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Download Craps Game and Storage Classes in C Programming and more Slides Computer Fundamentals in PDF only on Docsity!

5.10 Example: A Game of Chance

• Craps simulator

• Rules

– Roll two dice

• 7 or 11 on first throw, player wins

• 2, 3, or 12 on first throw, player loses

• 4, 5, 6, 8, 9, 10 - value becomes player's "point"

– Player must roll his point before rolling 7 to win

Outline

fig05_10.c (Part 1

of 4)

Outline

fig05_10.c (Part 3

of 4)

Outline

fig05_10.c (Part 4

of 4)

5.11 Storage Classes

• Storage class specifiers

– Storage duration – how long an object exists in memory

– Scope – where object can be referenced in program

– Linkage – specifies the files in which an identifier is known

(more in Chapter 14)

• Automatic storage

– Object created and destroyed within its block

– auto: default for local variables

auto double x, y;

– register: tries to put variable into high-speed registers

• Can only be used for automatic variables

register int counter = 1;

5.11 Storage Classes

• Static storage

– Variables exist for entire program execution

– Default value of zero

– static: local variables defined in functions.

• Keep value after function ends

• Only known in their own function

– extern: default for global variables and functions

• Known in any function

5.12 Scope Rules

• Block scope

– Identifier declared inside a block

• Block scope begins at definition, ends at right brace

– Used for variables, function parameters (local variables of

function)

– Outer blocks "hidden" from inner blocks if there is a variable

with the same name in the inner block

• Function prototype scope

– Used for identifiers in parameter list

Outline

fig05_12.c (Part 1

of 3)

Outline

fig05_12.c (Part 3

of 3)

Outline

Program Output

local x in outer scope of main is 5 local x in inner scope of main is 7 local x in outer scope of main is 5 local x in a is 25 after entering a local x in a is 26 before exiting a local static x is 50 on entering b local static x is 51 on exiting b global x is 1 on entering c global x is 10 on exiting c local x in a is 25 after entering a local x in a is 26 before exiting a local static x is 51 on entering b local static x is 52 on exiting b global x is 10 on entering c global x is 100 on exiting c local x in main is 5