C:/Musimathics_local/Musimat/MusimatTutorial/B0124.cpp File Reference

#include "MusimatTutorial.h"

Go to the source code of this file.

Functions
	MusimatTutorialSection (B0124)
Integer	factorial (Integer x)
Static Void	para1 ()

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Function Documentation

Integer factorial

(

Integer

x

)

Definition at line 15 of file B0124.cpp.

                             {
        Integer n = 1;
        For (Integer i = x; i > 1; i = i - 1)
                n = n * i;
        Return(n);
}

MusimatTutorialSection

(

B0124

)

Definition at line 2 of file B0124.cpp.

References para1().

                              {
Print("*** B.1.24 Recursion ***");
/*****************************************************************************

B.1.24 Recursion

Recursion means referring back to a value we’ve calculated previously. Consider the factorial 
operation where 5! means 5 x 4 x 3 x 2 x 1. We could use a For statement to calculate factorials. 
This function calculates factorials using iteration:
*****************************************************************************/
        para1(); // Step into this function to continue the tutorial
}

Static Void para1

(

)

Definition at line 22 of file B0124.cpp.

References factorial().

                    {
/*****************************************************************************
 The statement
 *****************************************************************************/

Print(factorial(5));

/*****************************************************************************
 prints 120.

We start with n = 1 and i = 5. The For loop takes the previous value of n, multiplies it by the 
current value of i and reassigns the value to n. It then decrements i and performs the operation 
repeatedly so long as i > 1.

*****************************************************************************/
}}

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