C++ is a general-purpose programming language that is compiled into machine-readable code. It allows for high-level programming through the use of compilers that translate human-readable C++ code into low-level machine code. A C++ program structure typically includes header files, a main function that returns 0, and statements that output text like "Hello World!". C++ builds upon C by adding object-oriented programming capabilities like classes.

1. C++
IICT - Lab-7

2. TABLE OF CONTENTS
• Programming Languages
• Levels of Programming Languages
• Compiler
• C++
• Structure of a Simple C++ Program

3. PROGRAMMING LANGUAGES
A programming language is a
formal computer language
designed to communicate
instructions to a machine,
particularly a computer.
Programming languages can be
used to create programs to control
the behavior of a machine or to
express algorithms.
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4. PROGRAMMING LANGUAGES
LEVELS
• High Level Language
More Human Understandable
English like statements
• Assembly Language
Less Human Understandable
Low level language similar to machine language
• Machine Language
Computer Understandable
Low level language, consisting 1’s and 0’s

5. COMPILER
A compiler is a computer program
(or a set of programs) that
transforms source code written in a
programming language into
another computer language, with
the latter often being machine
language.
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English Like Lines
Easy for Programmer
High Level Language
Compiler
0’s and 1’s
Easy for Computer
Low Level Language

6. COMPILER
#include <iostream>
using namespace std;
int main()
{
return 0;
}
010101010110100010101
010101010101010101110
001010101010011001010
101000010010110101010
100001010101010101010
101010100101010101010
10101010101000
Compiler
High Level Language Machine Language

7. • C++ is a general-purpose programming language.
• C++ is standardized by the International Organization for Standardization (ISO),
with the latest standard version published December 2014 and is known as
“C++14”.
• C with Classes.
• C++ is a Case-Sensitive Language.
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8. STRUCTURE OF C++ PROGRAM
#include <iostream>
using namespace std;
int main()
{
cout<<“Hello World!”;
return 0;
}
(Pre-Processor Directive)
Header File
Blank Lines have no impact. Just Improve Readability.
Function
Return Type
Function Name
C++ Statements
End of a Statement