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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));
+\ No newline at end of file