PROGRAMING EXERCISE 3(weekly reflection 4 in blog)

1. write correct C++ & for each statement below:

a)initializing variable Pi with the value 3.14 (constant)

//declare

float Pi-3.14

b)declare a variable named parameter with double data type (declare variable)

//declare parameter

double parameter=5.776198

c)give instruction that alowed user to input data (input)

//input

cout<<"Enter data=";

cin>>data;

d)input number of computer using variable(input assign to variable value)

//declare nc=number of computer

intnc;

//input

cout<<"Enter number of computer=";

cin>>nc;

2. solve the question below.show the working

a) 5*2 %3 + 25 / 5

=[10%3]+25/5

=1+5

=6

b)a=5,b=6

!((a<3)&&(a==3)||(b>9))

=![(0)&&(0)||(0)|

=1

!((a<3)&&(a==3)| |(b>9))

3. identify syntax errors in the following program.

4. write a program that will calculate the monthly salary for an employee that where saturday and sunday are considered as non-working days.

5. write a program that calculates the average of 5 number that can be input by user

6. write a program thatwill calculate the area of rectangular,triangle and circle

#include <iostream.h>
main()
{
      //declare
      float b,h,r,w,area,;
      float pi=3.14;
      int selection;
      //out
      cout<<"Please choose you choice"<<endl;
      cout<<"1.Rectangular";
      cout<<"\n2.Triangle";
      cout<<"\n3.Circle"<<endl;
      cin>>selection;
      switch (selection)
      {
             case 1: cout<<"Please input the height"<<endl;
                     cin>>h;
                     cout<<"Please input the width"<<endl;
                     cin>>w;
                     //process
                     area = w*h;
                     cout<<"The area is:"<<area;
                     break;
             case 2: cout<<"Please input the height"<<endl;
                     cin>>h;
                     cout<<"Please input the base"<<endl;
                     cin>>b;
                     //process
                     area = 0.5*b*h;
                     cout<<"The area is:"<<area;
                     break;
             case 3: cout<<"Please input the radius"<<endl;
                     cin>>r;
                     //process
                     area = pi*r*r;
                     cout<<"The area is:"<<area;
                     break;
             default :cout<<"Invalid Selection";
             return 0;

             }