Program to select an operation from list and display its results (Level - Medium)

Program # 19: Program to perform multiple operations

//Program to select an operation from list and display its results (Level - Medium)

#include <iostream.h> 
#include <conio.h> #include <complex.h>

void main ()

{

clrscr();

int i,n,x,p,b,res,count; 
cout<<"1. Factorial"<<endl; 
cout<<"2. OddƒEven "<<endl; 
cout<<"3. Prime"<<endl;

cout<<"4. Raise to power"<<endl; 
cout<<"5. Square root"<<endl; cout<<"Press the number of your choice "; 
cin >> n;

res = 1;

count = 0; 

switch (n)

{

case 1:

cout<<"Enter any number = "; cin >> n;

for(i=1;i<=n;i++)

res = res*i;

cout<<"The factorial of given number is = "<<res<<endl;

break; 

case 2:

cout<<"Enter any number = "; cin >> n;

if(n%2 == 0)

cout<<"The number is even ";
else
cout<<"The number is odd ";

break ; 

case 3:

cout<<"Enter any number = "; 
cin >> n;

for (i=1;i<=n;i++)

if(n%i==0)

count= count+1;

if(count==2)

cout<<"The number is prime "; 

else
cout<<"The number is not prime";
break;

case 4:
cout<<"Enter the base of number = "; 
cin >> b;
cout<<"Enter the power of number = ";
cin >> p;

for (i=1;i<=p;i++)

res = res*b;

cout<<"The raise to power of number = <<res;
break;

case 5:

cout<<"Enter any number = "; 
cin >> n;

float res = sqrt(n);

cout<<"The square root of the number is = "<<res;

break; default:

cout<<"Press the number in the above series";

}

getch ();

}