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Questions and Answers
Which of the following programming languages is NOT a high-level language?
Which of the following programming languages is NOT a high-level language?
- COBOL
- Java
- C++
- Assembly (correct)
What is the purpose of a compiler?
What is the purpose of a compiler?
- To execute a C++ program directly
- To translate high-level language to machine language (correct)
- To translate machine language to high-level language
- To analyze the syntax of a Java program
What is the #include directive used for in a C++ program?
What is the #include directive used for in a C++ program?
- To define a function
- To include a header file (correct)
- To start the execution of a program
- To declare a variable
What is the standard namespace used in C++ programming?
What is the standard namespace used in C++ programming?
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What is the purpose of the using namespace std; directive in a C++ program?
What is the purpose of the using namespace std; directive in a C++ program?
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Study Notes
Overview of Computers and Programming Languages
- Computers consist of hardware and software components that work together to process data.
- Hardware includes physical parts like the CPU, memory, and input/output devices.
- Software encompasses programs and applications that instruct the hardware on how to perform tasks.
Evolution of Programming Languages
- Programming languages are classified into high-level and low-level languages.
- High-level languages provide abstraction from machine language, aiding in easier program development.
- Notable high-level languages include:
- Basic
- FORTRAN
- COBOL
- Pascal
- C
- C++
- C#
- Java
- Low-level languages are close to machine code and include assembly language.
Compilers and Language Translation
- A compiler is a crucial tool that translates high-level language code into machine language that the computer can execute.
- This translation process allows developers to write code in a user-friendly format while optimizing it for machine execution.
Processing a C++ Program
- Basic structure of a C++ program includes:
- Preprocessor directives (e.g.,
#include) which allow for the inclusion of libraries. - The
main()function serves as the entry point of the program. coutis used for outputting text to the console.
- Preprocessor directives (e.g.,
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