Page 268 - Computer_Science_F5

Exercise 4.10
1. Write a C++ program
that can enable a user
to convert Fahrenheit to
FOR ONLINE READING ONLY
Centigrade degree. Use the
formula, Centigrade=5/9
(Fahrenheit-32).
2. Write the following program
on C++ text editor; then,
display the output.
#include<iostream>
using namespace std;
int main()
{
cout<<”2%3 = “<<2%3;
return 0;
}
3. Write a C++ program that
enables the user to calculate
the gradient (slope) of the
straight line. A program will
prompt the user to enter two
points (x1, y1) and (x2, y2).
Then, a program will find
and display a slope. Use the
formula:
y –y
2
Slope= x –x 1
2 1
4. What are the functions of
“cout” and “cin” in writing a
C++ program?
5. Using output stream “cout”
, write a C++ program that
displays the following table
as shown in Figure 4.36:
Student’s Book Form Five
Computer Science Form 5.indd 259
Chapter Four: Object oriented programming with C++
Figure 4.36: Output
6. Construct a C++ program that takes a
character as an input from the keyboard
and converts it into a capital letter or small
letter depending on its form. A program
should check the validity of the entered
character and display a message “The
entered character is not an alphabetical
letter” if the input is not a letter.
7. Give the output of the given program
#include <iostream>
using namespace std;
int main()
{
cout << “1 + 5 = “ << 1 + 5 << endl;
cout << “13 + 89 = “ << 13 + 89 << endl;
cout << “30 - 20 = “ << 30 - 20 << endl;
cout << “4 - 90 = “ << 46 - 90 << endl;
cout << “2 * 7 = “ << 2 * 7 << endl;
cout << “5 / 2 = “ << 5 / 2 << endl;
cout << “21 / 7 = “ << 21 / 7 << endl;
cout << “35 % 6 = “ << 35 % 6 << endl;
cout << “4 % 6 = “ << 4 % 6 << endl;
return 0;
}
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