Question

.using while loops(matlab)

Write a program to display the sum of the series [ 9 + 99 + 999 + 9999 ...]

Test Data :

Input the number or terms :5

Expected Output

:

9 99 999 9999 99999

The sum of the series = 111105

Answer 1

MatLab program

clear all
clc
% n is no. of terms
n=input('Input the number of terms: ');
i=1;
a=0;
while i<=n
    a=a+0.9*10^(i);
    x(i)=a;
    i=i+1;
end
fprintf('\n Series is :\n');
disp(x);
fprintf('\n Sum of series = %d',sum(x));

Screenshot

Save the above program and execute it.

Result

I hope this will help you.