computing lec 3
TRANSCRIPT
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C-Language
CS 535 Introduction to Scientific Computing
Theory : 3rdLecture
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History
A brief mention:
Computer Language :
Low level : Machine language
Middle level : Assembly language
High Level : C, Java, Fortran, so many
So C is a high level language
Designed by
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Every language has a set of
symbols
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Cs Character Set
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Cs Character Set
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Every language has a set of
symbolsSymbols are only for creating
words
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Cs Words : Identifiers
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Cs Words : Identifiers
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Cs Words : Identifiers
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Every language has a set of
symbols
Symbols are only for creating
words
Some words are called proper nouns
with a distinction of their own
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Cs Key words
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Cs Key words
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My resolution is constant; will
not change till the end of this life
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Cs Constants
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Numeric constants Rules
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Integer Numeric constants Rules
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Decimal Integer constants Rules
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Octal Integer constants Rules
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Hexadecimal Integer constants Rules
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Hexadecimal Integer constants Rules
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Floating Point constants Rules
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Floating Point constants Rules
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Character constants Rules
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Character constants Rules
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String constants Rules
characters that are embedded within the string
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Symbolic constants Rules
correspondingcharacter sequence
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Symbolic constants Rules
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The price is variable quantity, so it
may change its values in the market
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Variables
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Escape Sequence
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Escape Sequence
null \0 000
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Data Types
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Data Types
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Variable Declaration
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Examples Variable Declaration
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Examples Variable Declaration
declaration
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Initializing Variable
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Initializing Variable
initially assigned the character *
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Type Conversion
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Examples : Type Conversion
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Examples : Type Conversion
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Examples : Type Conversion
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Examples : Type Conversion
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Examples : Type Conversion
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Examples : Type Conversion
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Operators
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Types of Operators
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Arithmetic Operators
Modulus operator
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Arithmetic Operators
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Arithmetic Operators : Examples
expression
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Arithmetic Operators : Examples
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Arithmetic Operators : Examples
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Arithmetic Operators : Conversion
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Arithmetic Operators : Conversion
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Arithmetic Operators : Conversion
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Arithmetic Operators : Conversion
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Type Conversion summary
long doubledoublefloatunsigned long longlong long
unsigned longlongunsigned intintunsigned shortshortunsigned charchar
Higher
Lower
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Unary Operators
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Unary Operators
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Unary Operators
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Unary Operator : Example
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Unary Operator : Example
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Unary Operator : Example
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Unary Operator : Example
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Relational & Logical Operators
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Relational & Logical Operators
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Relational & Logical Operators
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Relational & Logical Operators
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Relational & Logical Operators
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Relational & Logical Operators
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Relational & Logical Operators
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Relational & Logical Operators
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Relational & Logical Operators
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Relational & Logical Operators
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Assignment Operators
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Assignment Operators
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Assignment Operators
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Assignment Operators
value of the conditional expression
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i O
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Assignment Operators
Other assignment operators: C also has five additional assignment operators:
+=, -+, *=, /=, and%=
To see how they work, consider the first
operator +=. The assignment expression :
Expression 1 += Expression-2
is equivalent to :
Expression 1 = Expression 1 + Expression 2
Bi i O
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Bitwise Operators
L f Shif O
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Left Shift Operator
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S i l O t
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Special Operators
A i ti it & P d
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Associativity & Precedence
A i ti it & P d
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Associativity & Precedence
A i ti it & P d
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Associativity & Precedence
P ti P bl
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Practice Problems
I t d O t t
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Input and Output
I t d O t t
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
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Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
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Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
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Input and Output
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Input and Output
have been entered successfully.
Input and Output
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Input and Output
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Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
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Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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Input and Output
Input and Output
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p p
Input and Output
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p p
Input and Output
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p p
Input and Output
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p p
Input and Output
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p p
Input and Output
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p p
Input and Output
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p p
Input and Output
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p p
Input and Output
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p p
Input and Output
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p p
Input and Output
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p p
Input and Output
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Input and Output
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Input and Output
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Input and Output
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Input and Output
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Input and Output
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conversion character
Input and Output
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Input and Output
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Input and Output
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Input and Output
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Input and Output
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Control Structures
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Control Structures
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Control Structures
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statement will be ignored
Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Control Structures
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Repetition Statement :for
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For Loop:
for (initialisation; repetition_condition; update)
{
Statement1;
... ...
StatementN;
}
Execution Details:
(1) it executes the initialisationstatement.
(2) it checks to see if repetition_conditionis true. If it isn't, it finishes
with the "for loop" completely. But if it is, it executes each of thestatements Statement1... StatementNin turn, and then executesthe expression update.
(3) After this, it goes back to the beginning of step (2) again.
Repetition Statement :for loop
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Repetition Statement : whileloop
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Repetition Statement :do-whileloop
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do-while loop:do{statement 1;
statement 2;
..statement n;
}while(condition);
Execution Details:Same as while loop. Only difference is that condition is
checked at the end. So the set of statements must be executedat least once.
Practice Problems
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