multiple loopings in a program

Hi, i have a coding that requires user to input 2 numbers that are within a specific range.for example, for the first number:(please choose a number ranging from 1 to 7). If the user chose a number that is out of range, it will prompt for another number until the number chosen is within range.Then the program will proceed and ask for the second number:(please choose a number ranging from 15 to 20). Same as before, the number must be within range, otherwise it will just keep asking for a number. Can you please show me how to this?

Thank you

Answer 1

[Kuifeng]

 a = input('Input the value of a: ');
Range1 = [1 7];
str = strcat('Input the value of a again as a needs to be in the range from ', ...
    num2str(Range1(1)),' to ', num2str(Range1(2)),'. a:');
while or(a<Range1(1), a>Range1(2))
    a = input(str);
end

[badrul hisham]

thank you! this works

Answer 2

[Walter Roberson]

while true
  num = input('get on with the first number');
  if numels(num) ~= 1 || num < 1 || num > 7
    fprintf('Oh, you.. .you!\n');
  else
    break;
  end
end

[badrul hisham]

undefined function numels?