Answers:
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1. b, c 
2. parentheses 
3. braces { } 
4. It’s the first function executed when the program starts 
5. statement 
6. 
// this is a comment
/* this is a comment */

7. a, d 
8. a. 4 
b. 10 
c. 4 
d. 4 
9. False 
10. a. integer constant 
b. character constant 
c. floating-point constant 
d. variable name or identifier 
e. function name 
11. a. cout << ‘x’; 
b. cout << “Jim”; 
c. cout << 509; 
12. False; they’re not equal until the statement is executed. 
13. cout << setw(10) << george; 
14. IOSTREAM 
15. cin >> temp; 
16. IOMANIP 
17. string constants, preprocessor directives 
18. true 
19. 2 
20. assignment (=) and arithmetic (like + and *) 
21. 
temp += 23;
temp = temp + 23;

22. 1 
23. 2020 
24. to provide declarations and other data for library functions, overloaded operators, and objects 
25. library