LeapYear Loop/Repeat

So i made a leap year calculator and each time when it displays an answaer that its a leap year or not it asks the user if they want to repeat or not , but i dont know how to make it so it would repeat/loop .If you could show me where/what i missed would be great .

function year 
year = input (' Enter the year : ');
if mod(year,4) == 0 disp ('Is a leap year')
    condition = input("Would you like to repeat? (yes/no)\n", 's') == "yes";         
    elseif mod(year,100) == 0 disp ('false')
        elseif mod(year,400) == 0 disp ('true')
            else disp ('Is not a leap year')
                condition = input("Would you like to repeat? (yes/no)\n", 's') == "yes";              
end
clc

Answer 1

[Sam]

function year 
condition = "yes"
while strcmp(condition,"yes") == 1
    year = input (' Enter the year : ');
    if mod(year,4) == 0     
        if mod(year,400) == 0 disp ('true')
        elseif mod(year,100) == 0 disp ('false')
        else  disp ('true')   
    else disp ('false')            
    end
    condition = input("Would you like to repeat? (yes/no)\n", 's') == "yes";  
end