选中/取消选中复选框以显示/隐藏一个使用javascript的输入文件元素。

I am trying to show and hide an input file element on check/uncheck of a checkbox using javascript. I want to check checkbox c to hide the input file and uncheck it to show the input file. For the others checkboxes, it must be shown. What is the best way to implement this? what I'm doing wrong in my code? I am open to other suggestions. Thanks in advance.I am trying to show and hide an input file elem