Write a menu‐driven program to investigate the constant π

function choice = pioptions

choice = menu('Choose a pi option','Machin''s formula',...

'Leibniz''s formula: n-terms',...

'Leibniz''s formula: good approx','Exit Program');

while choice==0

disp('Error! Pleace choose')

choice = menu('Choose a pi option','Machin''s formula',...

'Leibniz''s formula: n-terms',...

'Leibniz''s formula: good approx','Exit Program');

end

end

%machin.m

function machin

pie=4 * ( 4 * atan(1/5) - atan(1/239) );

fprintf('pi using Machin''s formula is %.3f\n',pie)

end

%askn.m

function n=askn

n=input('enter a positive value of n:');

while numb ~= int32(n) || n <= 0

n = input('Error! Enter positive integer n:');

end

end

%leibniz.m

function leibniz

n = askn;

num = -4 * cumprod(-ones(1,n));

denom = 1:2:2 * n;

pie = sum(num./denom);

fprintf('Leibniz''s approximation for pi with %d terms is %.4f\n',n,pie);

end

%leibnizgood.m

function leibnizgood

err = 0.01;

N = 1;

S = 2;

runsum = 0;

difference = 1;

while err < difference

term = (-1)^S * 4/N;

temp = runsum;

runsum = runsum + term;

difference = abs(temp - runsum);

N = N + 2;

S = S + 1;

end

fprintf('Using Leibniz''s series, an approximation of pi within %.2f is %.2f\n',err,runsum)

end

choice = -1;

while choice ~=4

choice=pioptions;

switch choice

case 1

machin

case 2

Leibniz

case 3

Leibnizgood

end

end

command window

Error: File: SalmaPantaleonHW6.m Line: 62 Column: 1

This statement is not inside any function.

(It follows the END that terminates the definition of the function "leibnizgood".)

Error: File: SalmaPantaleonHW6.m Line: 62 Column: 1

This statement is not inside any function.

(It follows the END that terminates the definition of the function "leibnizgood".)

Answer 1

[Walter Roberson]

When you mix function and script in the same file then the script must be first .

[Walter Roberson]

By the way your code does not define numb