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Chapter 2

Chapter 2. Introduction to The C++ Language. Figure 2-1. Figure 2-2. Figure 2-3. Figure 2-4. Figure 2-5. Identifiers กฎสำหรับ Identifier ตัวอักษรแรกจะตัองเป็น A-Z หรือ a-z หรือ _ (underscore) Identifier จะประกอบด้วยตักอักษร ตัวเลข และ underscores

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Chapter 2

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  1. Chapter 2 Introduction to The C++ Language

  2. Figure 2-1

  3. Figure 2-2

  4. Figure 2-3

  5. Figure 2-4

  6. Figure 2-5

  7. Identifiers • กฎสำหรับ Identifier • ตัวอักษรแรกจะตัองเป็น A-Z หรือ a-z หรือ _ (underscore) • Identifier จะประกอบด้วยตักอักษร ตัวเลข และ underscores • Identifier จะต้องไม่ซ้ำกับคำสงวน

  8. Data Types • Set of Values • Set of Operations

  9. Figure 2-6

  10. Figure 2-7

  11. Figure 2-8

  12. Variables • Variable Declaration • TypeVariableName • เช่น intiVar ; • float fVar ; • char c ;

  13. Figure 2-9

  14. int count =0 ; // variable declaration and initialize int a, b=0; Variable Initialization

  15. Integer constants123, -10 Float constants0.0 , 1.5 Character constantsA character constant is enclosed in single quotes.‘a’ , ‘h’ , ‘c’ Constants

  16. Figure 2-10 String Constants

  17. Figure 2-11

  18. Figure 2-12 cin >> a Standard Output The standard output object in C++ is cout (console output). การส่งข้อมูลให้ cout จะใช้ insertion operator (<<)

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