find a digit in string

i have a folder named "inputImages" it contains 5 images named image1, image2 ... image5

i have a variable which contains a digit... if that digit contains in any of the names i want that image to get displayed in a figure...

example

variable=2; then image2.jpg should get displayed....

please can someone help me how to get the name of the image that contains the digit....

Answer 1

[Matt J]

 name=['image' num2str(variable) '.jpg'],

Answer 2

[Azzi Abdelmalek]

variable=2
file=sprintf('image%d',variable)