______ converts a source code to object code.
Compiler
Understanding Source Code and Object Code
In the world of computer programming, we write instructions for computers in a language that is easier for humans to understand. This is called source code. It's usually written in programming languages like C++, Java, Python, etc. Computers, however, understand instructions in a very different format, often called machine code or object code. This object code is typically in a binary format (sequences of 0s and 1s) or a format very close to it.
The process of converting source code into object code is a fundamental step in turning a human-readable program into something a computer can execute.
Exploring Code Conversion Tools
Several tools are used in the process of taking source code and preparing it to run on a computer. Let's look at the roles of the options provided:
- Editor: This is a program used for writing and editing text files, including source code. It's where you type the instructions of your program.
- Loader: This tool is part of the operating system. Its job is to take executable code (which might be object code that has been linked) and load it into the computer's memory so that it can be run.
- Linker: Programs often use code from different source files or from pre-written libraries. A linker combines these separate pieces of object code and libraries into a single executable file.
- Compiler: This is the key tool that translates the entire source code written in a high-level programming language into machine code or object code that the computer's processor can understand directly or indirectly (via linking).
Detailed Explanation of Compiler
The tool specifically designed to convert source code into object code is the compiler. It reads the entire source code program, analyzes it for errors, and if no errors are found, it translates the instructions into the target machine's native language (object code). This object code is typically saved in a file.
Here's a simple view of the process:
Source Code --> Compiler --> Object Code
Later steps, involving the linker and loader, prepare this object code for execution.
Summary of Tool Functions
| Tool | Primary Function |
|---|---|
| Editor | Write and edit source code. |
| Compiler | Convert source code to object code. |
| Linker | Combine object files and libraries into an executable. |
| Loader | Load executable code into memory for execution. |
Based on the functions described, the tool that converts source code to object code is the compiler.
Revision Table: Code Conversion Tools
| Term | Definition |
|---|---|
| Source Code | Program instructions written in a human-readable language. |
| Object Code | Output of the compiler, usually machine code or intermediate code. |
| Compiler | Translates source code into object code. |
| Linker | Combines object files and libraries. |
| Loader | Loads executable into memory. |
| Editor | Tool for writing/editing code. |
Additional Information: Software Development Process
The conversion from source code to a running program involves several stages:
- Editing: Writing the source code using an editor.
- Compiling: Converting the source code into object code using a compiler. If there are syntax errors, the compiler reports them.
- Linking: Combining object code with necessary libraries and other object files using a linker to create an executable file.
- Loading & Executing: Loading the executable file into memory using a loader and then running the program.
Understanding the role of each of these tools is crucial for anyone learning about how software is built and executed.
Important Questions from Programming in C
In object-oriented programming, which keyword ensures that a member variable belongs to the class itself rather than to any specific object, thereby allowing all instances to share a single copy of that variable?
The three basic structure types used to write the algorithm for a program are sequence, selection and repetition. Which of the following is NOT an advantage of using only these structures when writing the algorithm for a program?
Which statement(s) is/are true about formation of identifier in C?
I. It consist of alphabets, digits and underscore.
II. An identifier can start with an underscore.
What is the output of the code written in C?
void main()
{
printf("%d",7%-3);
printf("%d",-7%3);
}
Which of the following statement(s) is/are true about pre-processor in C/C++?
I. To replace each #include directive with the contents of the designated file.
II. To replace each escape sequence with designated character.
III. To process macro definitions and expand macro calls.
