Self Test Questions

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1. What’s the purpose of the main() function? Why does every C++ program need one?

2. Describe how disassembling your programs and studying the results can improve your understanding of the C++ language and your computing platform.

3. What is the purpose of the preprocessor directive #include?

4. (True/False) You can use the C++ reserved keywords to name your own program objects.

5. The sizeof operator will return the size of data types in what unit of measure?

6. You can either memorize C++ operator precedence or use ________________ to force precedence and make source code easier to read at the same time.

7. Why can an unsigned data type represent a larger positive value than a signed data type?

8. When negative numbers are shifted to the right using the >> operator what is the effect on the sign bit?

9. How are string literals terminated?

10. Study the following code and answer the following questions:

     1  #include <iostream>  2  using namespace std;   3  4  int val1 = 1;  5  6  int main(){  7    {  8      cout<<val1++<<endl;  9      int val1 = ::val1; 10      cout<<val1<<endl; 11    } 12    cout<<val1<<endl; 13  return 0; 14  }

    • What value will the new variable named val1 be initialized to on line 9?

    • Which val1 will be printed to the screen on line 10?

    • What is the value of val1 printed to the screen on line 12?

    • Describe the effect of using the unary scope resolution operator :: on line 9. Why is its use necessary?

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