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 moey187 11Apr2011 20:21

Need help with C++ programming work

Hi, I'm new to programming and I'm doing a course in uni. I'm currently using "Dev-C++". I've been away on holidays and haven't been able to grasp the work we're doing now. I would really appreciate it if any of you C++ programming geniuses helped me with my work as I'm in a troubling situation with no idea what to do. If anyone is so helpful enough to help me with some of the questions or as much as you can then I will be so grateful. I will use this help to learn and understand more about C++ but for now I just need help on these questions.
Thanks.

Quote:
 Q.1 Option A Using parentheses, rewrite the following expression to indicate the correct order of evaluation. Then evaluate the expression, assuming a=5, b=2, and c=4. a % b * c && c % b * a Option B Determine the value of the following expression, assuming a=5, b=2, c=4, and d=5. d % b * c > 5 || c % b * d < 7 Option C Using parentheses, rewrite the following expression to indicate the correct order of evaluation. Then evaluate the expression, assuming a=5, b=2, and c=4. b % c * a || a % c * b
Quote:
 Q.2 Option A Write a C++ program to compute and display a person's weekly salary as determined by the following expressions: If the number of hours worked is less than or equal to 40, the person receives \$8.00 per hour; otherwise, the person receives \$320.00, plus \$12.00 for each hour worked over 40 hours. The program should request the hours worked as input and should display the salary as output. Option B Write a C++ program that accepts a character using the cin object and determines whether the character is a lowercase letter. A lowercase letter is any character that is greater than or equal to 'a' and less than or equal to 'z'. If the entered character is a lowercase letter, display the mssage The character just entered is a lowercase letter. If the entered letter is not lowercase, display the message The character just entered is not a lowercase letter.
Quote:
 Q.3 This question is in regard to the C++ program #include #include using namespace std; int main() { double monthlySales, income; cout << "Enter the value of monthly sales: "; cin >> monthlySales; if (monthlySales >= 50000.00) income = 375.00 + .16 * monthlySales; if (monthlySales >= 40000.00 && monthlySales < 50000.00) income = 350.00 + .14 * monthlySales; // simplified here from the one in the textbook if (monthlySales < 40000.00) income = 200.00 + .03 * monthlySales; cout << "\n\n\The income is \$" << income << endl; return 0; } and the C++ program #include #include using namespace std; int main() { double monthlySales, income; cout << "Enter the value of monthly sales: "; cin >> monthlySales; if (monthlySales >= 50000.00) income = 375.00 + .16 * monthlySales; else if (monthlySales >= 40000.00) income = 350.00 + .14 * monthlySales; // simplified here from the one in the textbook else income = 200.00 + .03 * monthlySales; cout << "The income is \$" << income << endl; return 0; } Option A Will these two programs produce the same output? Which program is better? Why? Draw the flow chart for the first C++ program. Option B Will these two program produce the same output? Which program is better? Why? Draw the flow chart for the second C++ program.
Quote:
 Q.4 Option A, B For the following C++ program #include using namespace std; int main() { int num = 0; while (num <= 20) { num++; cout << num << " "; } return 0; } determine the total number of items displayed, and the first and last numbers printed. Draw the flow chart for the C++ program, and then desk-check the program for the first 5 steps and the last 3.

 moey187 11Apr2011 21:47

Re: Need help with C++ programming work

I really am having trouble and I have attempted some of the questions. For example in question 2 I have managed this but am not sure if I am right. If any of you can please give me a full display of the program then I would appreciate it but this is my answer to question 2:

Option A
//input hours worked hr
int salary;
if(hr<=40 && hr>0)
salary=hr*4;
else
salary=320+((hr-40)*4);
//print salary
Option B
//input character ch
if(ch>='a' && ch<='z')
//print

Also for question 3 I think they produce the same output but I am not sure which program is better and why as well as how to draw a flow chart.

Finally, for question 4, I believe there's 21 items? I just need help with the flow chart and desk checking. Also have no idea for question 1.

I really am trying. Thanks.

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