Physics 5—Midterm Exam—Spring ’04 Name________________________________
- It is
known that the harmonic series is divergent; that is, it grows without
bound. However, it diverges very
slowly—summing 10000 terms only amounts to about 9.78751. Write C++ code for a program accepts a
user-supplied value for M and
then computes and displays the minimum value of N
so that . Use a while structure for looping.
- Write
C++ code for a program to produce a random integer between 1 and 100 and
allow the user to guess what it is.
If it is too low or too high, inform the user and prompt them to
guess a number in the narrowed interval of remaining possibilities. The screen for game play might look
something like this:
Enter a guess for the number between 1 and 100
62
Your guess is too low.
Enter a guess for the number between 62 and 100
86
Your guess is too low.
Enter a guess for the number between 86 and 100
95
Your guess is too low.
Enter a guess for the number between 95 and 100
98
Your guess is too low.
Enter a guess for the number between 98 and 100
99
Congratulations! The target was, in fact, 99.
- Each of the following code snippets contains an error. Identify the error as either a syntax error or a logic error and suggest a fix for the error
a.
#include <iostream>
int main()
{
int x = 10;
while(x != 1) x /= 5;
cout << x;
return 0;
}
b.
The following
code is meant to assure that the input is in the range between 1 and 100. How does it do?
#include
<iostream.h>
void main()
cout << “\nEnter a number
between 1 and 100:” endl
do
cin >> guess;
while(guess>0
&& guess<UpperBound)
cout << “Your guess was “
<< setw(5) guess;
return 0;
Write
a program to carry out the activity in the flow chart below. What is the result when the input is 42?