Problems 04

1. Homework H4.1: Evaluate: 2/10+6
2. Homework H4.2: Evaluate: 5-20%6
3. Homework H4.3: Evaluate: 2.0/10+6
4. Homework H4.4: Given:

   int a[] = {9, 9, 9, 9};
   int i = 1;
   a[i] = i++;
   

   When the code above executes there are two possible sets of results for a[1] and a[2]. What are they?

   set 1:                            set 2:
   
   a[1] =                            a[1] =
   a[2] =                            a[2] =
   

5. Homework H4.5: Convert 753 Decimal to Binary.
6. Homework H4.6: Convert 100111011 Binary to Decimal.
7. Homework H4.7: Carry out the binary addition:

    00101110
   +01011011
   ---------
   

8. Homework H4.8: Given the unsigned char 10001011 Find the decimal equivalent.
9. Homework H4.9: Given the char 10001011 Find the decimal equivalent.
10. Homework H4.10: Given the char 00001011 Find the decimal equivalent.
11. Homework H4.11: Given the decimal value -113, find its char bit pattern.
12. Homework H4.12: A printer has associated with it an integer variable

    int ctrl;
    

    Its 8th bit controls whether or not to allow revese printing (from right to left). Write code to set the 8th bit and allow reverse printing.
13. Homework H4.13: A continuation of the previous problem. Write code that clears bit 10 of variable ctrl.
14. Homework H4.14: Given int x = 23;. What is the value of the expression

       (x << 3) + (x << 1)
    

15. Homework H4.15: Two variables:

      char c;
      int lowerCaseCount=0;
    

    You are to write a statement that increases lowerCaseCount by 1 if character c contains a lower case letter.
16. Homework H4.16: Page 6 (More Control) has code that uses the switch construct to count the number of vowels in the string stored in array str. Replace the switch with an if construct:

       if  (....) 
         vCount++;
       else 
         nonVCount++; 
    

    Your job is to figure out what goes between the parentheses.