C++ practice programs.

Q1. write a program to perform operations on constant.
#include <iostream>
using namespace std;
int main()
{
double d;
d=10+28.05+ 'A'+ 017;
cout<<"d = "<<d;
return 0;
}


Q2. Write a program to print friend list.
#include <iostream>
using namespace std;
int main()
{
cout<<"sanika\n"<<"pavar\n"<<"xyz\n";
return 0;
}


Q3. programming example to print addition of two constant
numbers
#include <iostream>
using namespace std;
int main()

, {
int a=10;
int b=20;
int c;
c=a+b;
cout<<"addition of "<< a << " and "<< b <<" is "<< c;
return 0;




Q 4. Write a program to declare value for variable a and b
print its addition, subtraction multiplication and division
#include <iostream>
using namespace std;
int main()
{
int a,b,c;
cout<<"\n enter value for a= ";
cin>>a;
cout<<"\n enter value for b= ";
cin>>b;
c=a+b;
cout<<"\nadd = "<<c;
c=a-b;
cout<<"\nsub = "<<c;
c=a/b;

, cout<<"\ndiv = "<<c;
c=a%b;
cout<<"\nMod = "<<c;
c=a*b;
cout<<"\nmult = "<<c;
return 0;
}


Q5. Write a program to declare two-digit number to variable
n and print its reverse of n;
#include <iostream>
using namespace std;
int main()
{
int n,r;
cout<<"\n enter a number = ";
cin>>n;


r=(n%10)*10+(n/10);
cout<<"\n rev of "<< n <<" = "<< r;
return 0;
}


Q6. Write a program to print reverse of three digit
#include <iostream>

, using namespace std;
int main()
{
int n,r;
cout<<"enter a number= ";
cin>>n;


r=(n%10)*100+((n/10)%10)*10+(n/100);
cout<<"rev = "<<r;
return 0;
}


Q7. Write a program to enter product cost and calculate GST
and total.
#include <iostream>
using namespace std;
int main()
{
float pc,gst,gstper,total;
cout<<"enter product cost = ";
cin>>pc;
cout<<"enter gst percentaage = ";
cin>>gstper;


gst=pc*gstper/100;