Unplug the refrigerator. Mark the wires so you know where they go into the switch. Take out the switch and tube. Go to an appliance parts store with the switch and tube and the model and serial number of the refrigerator and get a new part. Do not kink, bend, or fold the new tube as you carry it home or install it.
A string variable is an array of characters. char a[10]; Which can hold any string value , that has a lenght less than or equal to the size of the character array. Whereas a string constant , is a particular string .
Usually, the array size is fixed, while strings can have a variable number of elements. Arrays can contain any data type (char short int even other arrays) while strings are usually ASCII characters terminated with a NULL (0) character. In general we allow random access to individual array elements.