EXERCISE 2

QUESTION 1:
a) intializing variable pi with the value 3.14
ans: float pi = 3.14
b) Declare a variable named parameter with double data type
ans: Double perimeter;
c) Give instruction that allowed user to input data
ans: cout<< "enter your data";
cin>> data;
d) Input number of computer using variable
ans:cout<<"enter number";
cin>>number;

QUESTION 2:
Change the if....else statement below to switch....case statement
#include
main ()
{
int selection,quantity;
float price;
cout<<"1.pen = Rm0.50";
cout<<"2.pencil = Rm0.30";
cout<<"3.ruler = Rm0.20";
cout<<"4.eraser = Rm0.10";
cin>>selection;
cin>>quantity;
if (selection = =1)
{ price = quantity * 0.50;}
else if (selection = =2)
{ price = quantity * 0.30;}
else if (selection = =3)
{ price = quantity * 0.20;}
else if (selection = = 4)
{ price = quantity * 0.10;}
else
{ cout <<"invalid selection";}
cout<<"the price is : "<

#include

main ()

{

int selection,quantity;

float price;

cout<<"1.pen = Rm0.50";

cout<<"2.pencil = Rm0.30";

cout<<"3.ruler = Rm0.20";

cout<<"4.eraser = Rm0.10";

cin>>selection;

cin>>quantity;

switch (selection)

{

case 1: price = quantity * 0.50;break

case 2: price = quantity * 0.30;break

case 3: price = quantity * 0.20;break

case 4: price = quantity * 0.10;break

default: cout<<"invalid selection";

}

cout<<"the price is: "<

return 0;

}