Download Exam Review | Computer Science I | CS 155 and more Study notes Computer Science in PDF only on Docsity!
Name __________________________________
General Question – 25 points (5 points each):
- The extraction operator (>>) is used for input and it skips ___________________when inputting values.
- A 4-bit memory location can store unique values.
- Define Algorithm.
- A data type that we have used that is not part of the original C++ language is the data type.
- Are the following Boolean expressions equivalent? Circle YES or NO !(A && B) B && !A
Tracing One – Predict the output of the following code as it would appear on the screen – 25 points. #include using namespace std;
int main(){ int a = 2, b = 4, c = 6, d = 5; double e = 5.0;
cout << "PROB1: " << a + b / d << endl; cout << "PROB2: " << a + b / e << endl; cout << "PROB3: " << d + a * c % b << endl; cout << "PROB4: " << a + b++ << endl; cout << "PROB5: " << b << endl;
return 0; } Show output below:
Name __________________________________
Tracing Two – Predict the output of the following code as it would appear on the screen – 25 points. #include using namespace std;
int main(){ int x = 2; int res1 = 0; while (x < 12){ res1 = res1 + x; cout << "res1: " << res1 << endl; x = x * 2; } cout << "x: " << x << endl;
cout << "***********" << endl; int i = 1; int j;
int res2 = 0; while (i < 4){ j = 1; res2 = 0; while ( j < 5){ res2 = i * j; cout << res2 << " "; j++; } cout << endl; i++; }
return 0; } Show output below:
Name __________________________________
Coding Two– Write the entire program for the problem presented – 25 points.
Write a program that asks the user for a list of grades to be averaged. Ask for grades until the user enters a value less than 0 or greater than 100. The invalid entry should not be included in the average. Be sure to include descriptive prompts for input and descriptive explanations for output.
Sample Input: 90 91 100 80 75 - Sample Output: The average of 5 grades is: 87.
Neatly write your entire program:
