C++ Basic Programming 4

Basic Example

Note:
In C++ the variables can be declared any where in the program , but they have to be declared before they are used.

Question:1
C++ program to take input for two numbers calculate and print their sum?
Sol:

#include<iostream>
using namespace std;
int main()
{
	int a,b,c;
	cout<<"Enter 1st no ";
	cin>>a;
	cout<<"Enter 2nd no ";
	cin>>b;
	c=a+b;
	cout<<"Sum = "<<c<<endl;
	return(0);
}

/* Output */
Enter 1st no 10
Enter 2nd no 20
Sum = 30

Question:2
C++ program to calculate and print square and cube of a number?
Sol:

#include<iostream>
using namespace std;
int main()
{
	int n,s,c;
	cout<<"Enter any no ";
	cin>>n;
	s=n*n;
	c=n*n*n;
	cout<<"Square = "<<s<<endl;
	cout<<"Cube = "<<c<<endl;
	return(0);
}

/* Output */
Enter any no 5
Square = 25
Cube = 125

Question:3
C++ program to calculate and print sum, prod, and difference between two numbers?
Sol:

#include<iostream>
using namespace std;
int main()
{
	int a,b,s,p,d;
	cout<<"Enter 1st no ";
	cin>>a;
	cout<<"Enter 2nd no ";
	cin>>b;
	s=a+b;
	p=a*b;
	if(a>b)
	d=a-b;
	else
	d=b-a;
	cout<<"Sum = "<<s<<endl;
	cout<<"Prod = "<<p<<endl;
	cout<<"Diff = "<<d<<endl;
	return(0);
}

/* Output */
Enter 1st no 10
Enter 2nd no 20
Sum = 30
Prod = 200
Diff = 10