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+//            Topic 9.16 RECURSION 

+//            Page no. 288

+//Write a program to calculate factorial of a number using recursion

+function[fact1]=factorial1(n)

+    fact1=-1

+    if(n<0) then

+        disp("Please enter positive value[i.e. 0 or greater than 0]  ");

+        return;                   //Quits the current function

+    end

+    if((n==0)|(n==1)) then

+        fact1=1;

+    else

+        fact1=n*factorial1(n-1);   //recursive call to factorial1()

+    end

+endfunction

+n=input("Enter number:");

+//calling factorial1() function inside printf()

+printf("Factorial of %d  = %d",n,factorial1(n));
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