Limiting number of characters to three positions (ranging from 0–150)

The code below limits number of characters to three positions ranging from 0 to 100.

if length(string) <= 1 || strcmp([string, char], '100')
              string = [string, char];
end

However, if I try:

if length(string) <= 1 || strcmp([string, char], '150')
              string = [string, char];
end

Number of characters are limited to two positions and range from 0 to 99.

If I try:

if length(string) <= 2 || strcmp([string, char], '150')
              string = [string, char];
end

Number of characters are limited to three positions and range from 0 to 999.

I would like characters to be limited to three positions ranging from 0-150. Any suggestions? Thanks!

Answer 1

[Walter Roberson]

Or in

(string(1)=='1' & string(2) <='4')

[Lisa M]

Thanks Walter! Now I get the following: "Index exceeds the number of array elements(0)."

[Walter Roberson]

(length(string) == 2 & string(1)=='1' & string(2) <='4')

[Lisa M]

Thanks your suggestion helped! The below line gives me numbers from 0 until 159 now. It somehow still does not limit the response to 150...

((length(string)<= 1 || string(1)=='1' && string(2)<='5') && (length(string)<= 2 || string(2)<='5' && string(3)=='0'))

[Walter Roberson]

(isempty(string) && char ~= '0') || length(string) == 1 || (length(string) == 2 && string(1)=='1' && string(2) <='4') || strcmp([string, char], '150')

This code ignores leading 0 as well.