What is Compiler?
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What is Compiler?

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Compilers Principles, Techniques and tools by Alfred V.Aho, Ravi Sethi and Jeffrey D. Ullman...

Compilers Principles, Techniques and tools by Alfred V.Aho, Ravi Sethi and Jeffrey D. Ullman

What is Compiler?
Compiler Definition

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  • 1. 1.1 Compilers:
    • A compiler is a program that reads a program written in one language –– the source language –– and translates it into an equivalent program in another language –– the target language
  • 2. 1.1 Compilers:
    • As an important part of this translation process, the compiler reports to its user the presence of errors in the source program.
  • 3. 1.1 Compilers:
  • 4. 1.1 Compilers:
    • At first glance, the variety of compilers may appear overwhelming.
    • There are thousands of source languages, ranging from traditional programming languages such as FORTRAN and Pascal to specialized languages.
  • 5. 1.1 Compilers:
    • Target languages are equally as varied;
    • A target language may be another programming language, or the machine language of any computer.
  • 6. 1.1 Compilers:
    • Compilers are sometimes classified as:
      • single-pass
      • multi-pass
      • load-and-go
      • Debugging
      • optimizing
  • 7. 1.1 Compilers:
    • The basic tasks that any compiler must perform are essentially the same.
    • By understanding these tasks, we can construct compilers for a wide variety of source languages and target machines using the same basic techniques.
  • 8. 1.1 Compilers:
    • Throughout the 1950’s, compilers were considered notoriously difficult programs to write.
    • The first FORTRAN compiler, for example, took 18 staff-years to implement.
  • 9.
    • Ref: Compilers principles, Techniques, and Tools by Alfred V.Aho, Ravi Sethi, Jeffrey D. Ullman..
    • Upload By: Tayyab Arif
    • Contact: 00923445064252
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    • Allama Iqbal Open Unviersity, Islamabad