11. Write a program that uses a function called Factorial which takes only one i

Question

11. Write a program that uses a function called Factorial which takes only one inputN (an integer) and computes and returns the answer as a double. The factorial is computed as 1 *2 3 . N (Use a loop inside the function to do this). Write the main that sends a suitable value for N and displays the value of the Factorial after calling the function. 12. Given the following program, answer the questions given below: #include using namespace std void Test(int a, int &b;, int c), int main int first, second, third first = 2; second = 3; third = 9; Test(first, second, third) cout

Explanation / Answer

11)

#include<iostream>
using namespace std;
double factorial (int n)
{
    fact=1;
   for(int i=1;i<n;i++)
    fact*=i;
   return fact;
}

int main()
{
   double fact = factorial(5);
   cout<<fact;
}

12)

function prototype : void Test(int a ,int&b , int c);

value parameters : int a int c

reference parameters : int &b

function call : Test(first , second , third);

output:

first = 2

second = 7

third = 9

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