last exercise b4 our examination

1) Change the if...else statement below to switch...case statement
#include<iostream.h>
main()
{
int nomA,nomB,selection,value;
cout<<"Enter 2 number:";
cin>>nomA>>nomB;
cout<<"1.Addition";
cout<<"2.Substraction";
cout<<"3.Multiply";
cout<<"4.Division";
cout<<"Enter selection=";
cin>>selection;
if(selection==1)
{value=nomA+nomB;}
else if(selection==2)
{value=nomA-nomB;}
else if(selection==3)
{value=nomA*nomB;}
else if(selection==4)
{value=nomA/nomB;}
else
{cout<<"Invalid selection";}
cout<<"The value is:"<<value;
return 0;
}

#include<iostream.h>
main()
{
int nomA,nomB,selection,value;
cout<<"Enter 2 number:";
cin>>nomA>>nomB;
cout<<"1.Addition";
cout<<"2.Substraction";
cout<<"3.Multiply";
cout<<"4.Division";
cout<<"Enter selection=";
cin>>selection;
switch(selection)
{
case1:"value=nomA+nomB";break;
case2:"value=nomA-nomB";break;
case3:"value=nomA*nomB";break;
case4:"value=nomA/nomB";break;
default:cout<<"Invalid selection";
cout<<"The value is:"<<value;
}
return 0;
}

2) Change the for loop statement below to while loop
#include<iostream.h>
main()
{
int i,power2;
for(i=1;i<=9;i++)
{
power2=i*i;
cout<<" "<<i<<"power2"<<power2;
}
return 0;
}

#include<iostream.h>
main()
{
int i,power2;
//while
i=1;
while(i<=9)
{
power2=i*i;
cout<<" "<<i<<"power2"<<power2;
i++;
}
return 0;
}

3) Write a program that input 2 numbers. Compare the numbers & display only the biggest number. If the numbers are same, display the numbers are same.
#include<iostream.h>
main()
{
int nomA,nomB;
cout<<"Enter 2 numbers=";
cin>>nomA>>nomB;
if(nomA>nomB)
{cout<<"nom A is bigger than nom B";}
else if(nomA==nomB)
{cout<<"nom A is same as nom B";}
else
{cout<<"Invalid";}
return 0;
}

4) Write a program using for loop that receive prices of 3 products. Calculate the price that must be paid after 10% discount is given to every customer.
#include<iostream.h>
main()
{
int x,price,total,discount;
for(x=1;x<4;x++)
{
cout<<"price["<<x<<"]:";
cin>>price;
total=total+price;
}
cout<<"total="<<total;
discount=total*0.10;
cout<<"discount"<<discount;
return 0;
}

5) What is the output for the following program segmment
i) int x=20;
   for(int i=5;i<=x;i++)
  {
   cout<<i;
   i=i+4;
  }

  5
  10
  15
  20

ii) int mul=1;
   do
  {
   mul=mul*2;
   cout<<"The mul is:"<<mul;
   mul++;
  }
  while(mul<10)

  1
  3
  7

Exercise niy ktorang wt tyme mis wt extra class b4 exam . mis suh student wt kt white board . aq kne wt num 2 . pas uh aq sala sbb lupe na ltx semikolon . hmm cuai aq niy )= sume soalan niy mis da check n discuss nan ktorang . so jwpn dy insyallah betol (: