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Answer Posted / mubeen riaz
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Computers basicly work with binary numbers, people speak their native languages, so, programming languages are for communication between people and computers. If you say: Add 2 and 3 and then substract 1 from it, I doubt that computer would understand anything (maybe in some programming language it would). So, you need to translate your source code into a format that computer understands, so you need a compiler, which translates a programming language to co called object code. But object code is not yet the language a computer understands and executes directly. So it needs a linker which will make an executable file that containts instructions in so called machine language; a machine language is a set of operations coded into binary numbers which processor understands. All binary instructions have it's structure and it's published by a processor manufacturers. You can look for it on say Intel's site and see how do they look like. I can't give a satisfactory answer for loaders at the moment so please search Google as a beginning step.
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