Question 1: Make a simple Calculator for addition, subtraction, multiplication and division using user define function.
Solution:
#include<iostream>
#include<string>
using namespace std;
int add(int a, int b)
{
return a+b;
}
int subtract(int a, int b)
{
return a-b;
}
int multiply(int a, int b)
{
return a*b;
}
int divide(int a, int b)
{
return a/b;
}
int main()
{
int var1, var2;
cout<<"Enter First Number: ";
cin>>var1;
cout<<"Enter Second Number: ";
cin>>var2;
cout<<"1. Add"<<endl;
cout<<"2. Subtract"<<endl;
cout<<"3. Multiply"<<endl;
cout<<"4. Divide"<<endl;
int choice,a;
cout<<"Enter Your Choice: ";
cin>>choice;
switch (choice)
{
case 1:
{
a=add(var1, var2);
cout<<"Sum is: "<<a<<endl;
break;
}
case 2:
{
a=subtract(var1, var2);
cout<<"Difference is: "<<a<<endl;
break;
}
case 3:
{
a=multiply(var1, var2);
cout<<"Multiplication is: "<<a<<endl;
break;
}
case 4:
{
a=divide(var1, var2);
cout<<"Division is: "<<a<<endl;
break;
}
default:
break;
}
}
Question 2: Write a program to find factorial of any numbers using
recursive method.
Solution:
#include<iostream>
#include<string>
using namespace std;
int factorial(int n)
{
if(n==1)
{
return 1;
}
else
{
return n*factorial(n-1);
}
}
int main()
{
int fact,n;
cout<<"enter Number to find Factorial: ";
cin>>n;
fact=factorial(n);
cout<<"Factorial of "<<n<<"is: "<<fact<<endl;
return 0;
}
Question 3:What is difference between Object Oriented Programming(OOPs)
and Procedural Programming Language?
Solution:
Procedural Programming Language:
a)In this program is divided into small parts called function.
b)It follows top down approach.
c)Adding new data and function is not easy.
d)It does not have any proper way for hiding data so it is less secure.
e)Overloading is also not possible in this.
Object Oriented Programming Language:
a)In this program is divided into small parts called objects.
b)It follows bottom up approach.
c)Adding new data and function is easy.
d)It provides data hiding so it is more secure.
e)Overloading is possible in this.
Question 4:
Solution:
#include<iostream>
#include<string>
using namespace std;
void leftRotation(int arr[], int n)
{
int temp;
temp=arr[0];
for(int i=0;i<n;i++)
{
arr[i]=arr[i+1];
}
arr[n-1]=temp;
}
void printArray(int arr[], int n)
{
for(int i=0;i<n;i++)
{
cout<<arr[i]<<" ";
}
}
int main()
{
int n;
cout<<"enter n: ";
cin>>n;
int arr[n];
for(int i=0;i<n;i++)
{
cin>>arr[i];
}
leftRotation(arr, n);
printArray(arr, n);
}
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