In C language, the static keyword has a lot of importance. If we have used the static keyword with a variable or function, then only internal or none linkage is worked. I have described some simple use of a static keyword.
1. A static variable only initializes once, so a variable declared static within the body of a function maintains its prior value between function invocations.
2. A global variable with static keyword has internal linkage, so it only accesses within the translation unit (.c). It is not accessible by another translation unit. The static keyword protects your variable to access from another translation unit.
