Table of Contents
- 1 What is executable source code?
- 2 What are the different steps to form an executable file from C source code?
- 3 Which program loads the executable code from the main memory into the CPU for execution?
- 4 How are executable files created?
- 5 How does a source code become a program?
- 6 What happens before source code is converted into data?
What is executable source code?
What is Executable Code. Executable code is a file or a program that indicates tasks according to encoded instructions. The CPU can directly execute an executable file to defined tasks. In other words, it is machine code instructions for a physical CPU.
What are the different steps to form an executable file from C source code?
Four Steps of Compilation: preprocessing, compiling, assembly, linking.
- Preprocessing: Preprocessing is the first step.
- Compiling: Compiling is the second step.
- Assembly: Assembly is the third step of compilation.
- Linking: Linking is the final step of compilation.
How does an executable file work?
An executable file (exe file) is a computer file that contains an encoded sequence of instructions that the system can execute directly when the user clicks the file icon. Executable files commonly have an EXE file extension, but there are hundreds of other executable file formats.
How is source code different from object code?
Source code is generally understood to mean programming statements that are created by a programmer with a text editor or a visual programming tool and then saved in a file. Object code generally refers to the output, a compiled file, which is produced when the Source Code is compiled with a C compiler.
Which program loads the executable code from the main memory into the CPU for execution?
Linker generates the executable module of a source program. Loader loads the executable module to the main memory for execution. Linker takes the object code generated by an assembler, as input.
How are executable files created?
When you want to create an EXE file on Windows, you typically use a compiler to turn a human-readable programming language in what’s called source code into machine code that a computer can execute. An EXE file contains machine code in a specific format designed by Microsoft.
How does a compiler convert source code to machine code?
A compiler takes the program code(source code) and converts the source code to a machine language module (called an object file). So, for a compiled language the conversion from source code to machine-executable code takes place before the program is run. I.
Is a machine code an executable file?
A machine code file can be immediately executable (i.e., runnable as a program), or it might require linking with other object code files (e.g. libraries) to produce a complete executable program. What is the difference between a source code and compiled code? Source code is the set of human-readable instructions a programmer writes.
How does a source code become a program?
How does source code become a program? 1 Parsing source code. To ‘parse’ means to break up into smaller parts. 2 Compiling source code. Compiling source code refers to turning it into an actual program. 3 Interpreting source code.
What happens before source code is converted into data?
Before source code can be converted into meaningful data for the computer, it has to be parsed. Once this happens, source code is ready for the next step which is compilation.