10. (1 point) True or False: If you refer to an identifier with out declaring it

Question

10. (1 point) True or False: If you refer to an identifier with out declaring it, the compiler will generate an error message 11. (1 point) A variable is said to be palced in it. the first time a vavlue is 12. (1 point) True or False: The semantic rules of a language tell you what is legal and what is not legal 13. (1 point) A semicolon is also called the 14. (1 point) True or False: To use cin and cout in a program, the program must include the header file iostream: 15. (1 point) True or False: To use the predefined function sqrt in a program, the program must include the header file cmath: 16. (1 point) A KiloByte (KB) is how many bytes? 17. (1 point) How many bits are in a nibble? 18. (1 point) For a Micosoft Windows C++ program, what is the one file that must be included first: 19. (1 point) Which of the "founding fathers" of computer science is attributed with equating Boolean algebra with swithing networks: a. Gorage Boolean b. Claude Shannon c. Al Gore d. John Von Nuemen

Explanation / Answer

10 . True ,
Explanation
Declaration can be checeD during compile time. So yeah compiler will generate error message

11) initialised

12) True, semantic rules will determine what is legal or not

13) It is also called a punctuator

14) True , C++ iostream we will get the user input from the console so we need to declare <iostream>

15) True, functions like pow, sqrt are defined in cmath, so we need to include it

16) 1024 bytes

17) 4 bits

18) #include <iostream>

19) George boolean

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