Question

Using c++.. 1. Write a program to find the sum(), Subtraction(), Multiplication(), Division() operations using Switch statement and functions. 2. Write a program to find the summation of N numbers. Use two functions. One function will take the input from user and the other will perform the summation from 1 to N. 3. Write a program to find the factorial of a number. Use two functions. One function will take the input from user and the other will perform the factorial. 4. Write a program using functions to find the ‘Even’ or ‘Odd’ number Submit your source code and output screen capture.

Answer 1

QUESTION 1 C++ CODE:

#include<iostream>
#include<iomanip>

using namespace std;

//function to add two numbers
int addition(int x,int y)
{
   return x+y;
}

//function to subtract two numbers
int subtraction(int x,int y)
{
   return x-y;
}

//function to multiply two numbers
int multiplication(int x,int y)
{
   return x*y;
}

//function to divide two numbers
double division(int x,int y)
{
   return (double)x/y;
}

//main function
int main()
{
   //variable for storing the choice
   int choice;
  
   //variable to store the results of operations and input
   int x,y,r,r2,r3;
   double r4;
  
   //infinite looping
   while(1)
   {
       //displaying the menu
       cout<<"\n1. Addition"       ;
       cout<<"\n2. Subtraction";
       cout<<"\n3. Multiplication";
       cout<<"\n4. Divison";
       cout<<"\n5. Exit";
      
       //getting the choice from the user
       cout<<"\nEnter your choice: ";
       cin>>choice;
      
       //choosing the action based on the input
       switch(choice)
       {
          
           // for addition
           case 1: cout<<"Enter the first number: ";
                   cin>>x;
                   cout<<"Enter the second number: ";
                   cin>>y;
                   r=addition(x,y);
                   cout<<"\nThe sum of "<<x<<" and "<<y<<" is "<<r<<endl;
                   break;
          
           //subtraction
           case 2: cout<<"Enter the first number: ";
                   cin>>x;
                   cout<<"Enter the second number: ";
                   cin>>y;
                   r2=subtraction(x,y);
                   cout<<"\nThe subtraction of "<<y<<" from "<<x<<" is "<<r2<<endl;
                   break;
                  
           // multiplication
           case 3: cout<<"Enter the first number: ";
                   cin>>x;
                   cout<<"Enter the second number: ";
                   cin>>y;
                   r3=multiplication(x,y);
                   cout<<"\nThe multiply of "<<x<<" and "<<y<<" is "<<r3<<endl;
                   break;
          
           //division
           case 4: cout<<"Enter the first number: ";
                   cin>>x;
                   cout<<"Enter the second number: ";
                   cin>>y;
                   r4=division(x,y);
                   cout<<"\nThe division of "<<x<<" by "<<y<<" is ";
                   cout<<fixed << setprecision(2)<<r4<<endl;
                   break;
                  
           //for closing the application      
           case 5: cout<<"\nClosing the application...";
                   exit(0);
                   break;
          
           default:cout<<"\nEnter 1,2,3,4, or 5";
              
                  
       }
      
   }

}

SCREENSHOT FOR OUTPUT:

QUESTION 2 C++ CODE:

#include<iostream>

using namespace std;

//function to find the sum of n numbers
int summation(int n)
{
   int sum=0,i=0;
  
   //loop to find the sum of n numbers
   for(i=1;i<=n;i++)
   {
       sum=sum+i;
   }
  
   return sum;
}

//function to get the input from the user
int get_input()
{
   int n;
  
   //getting input from the user
   cout<<"Enter a number: ";
   cin>>n;
  
   //return the value
   return n;
}
int main()
{
   //calling the functions
   int n=get_input();
   int r=summation(n);

   //printing the sum of n numbers
   cout<<"The sum of "<<n<<" numbers is "<<r;
   return 0;
}

SCREENSHOT FOR OUTPUT:

QUESTION 3 C++ CODE:

#include<iostream>

using namespace std;

//function to find the factorial of n numbers
int factorial(int n)
{
   int product=1,i=0;
  
   if (n==0)
       return 1;
  
   //loop to find the factorial of n numbers
   for(i=1;i<=n;i++)
   {
       product=product*i;
   }
  
   return product;
}

//function to get the input from the user
int get_input()
{
   int n;
  
   //getting input from the user
   cout<<"Enter a number: ";
   cin>>n;
  
   //return the value
   return n;
}
int main()
{
   //calling the functions
   int n=get_input();
   int r=factorial(n);

   //printing the sum of n numbers
   cout<<"The factorial of "<<n<<" is "<<r;
   return 0;
}

SCREENSHOT FOR OUTPUT:

QUESTION 4 C++ CODE:

#include<iostream>

using namespace std;

//function to a number odd or even
void odd_even(int n)
{
   if (n % 2 ==0)
   {
       cout<<"The given number "<<n<<" is even"<<endl;
   }
   else
   {
           cout<<"The given number "<<n<<" is odd"<<endl;
   }
}

//function to get the input from the user
int get_input()
{
   int n;
  
   //getting input from the user
   cout<<"Enter a number: ";
   cin>>n;
  
   //return the value
   return n;
}
int main()
{
   //calling the functions
   int n=get_input();
   odd_even(n);
}

SCREENSHOT FOR OUTPUT: