The C programming language is a
standardized programming language developed in the early 1970s by Ken Thompson
and Dennis Ritchie for use on the UNIX operating system. It has since spread to
many other operating systems, and is one of the most widely used programming
languages. C is prized for its efficiency, and is the most popular programming
language for writing system software, though it is also used for writing
applications.
There are 3 main uses for the static.
1. If you declare within a function:
It retains the value between function
calls
2.If it is declared for a function
name:
By default function is extern..so it
will be visible from other files if the function declaration is as static..it
is invisible for the outer files
3. Static for global variables:
By default we can use the global
variables from outside files If it is static global..that variable is limited
to with in the file.
#include <stdio.h>
int t = 10;
main(){
int x = 0;
void funct1();
funct1();
printf("After first call \n");
funct1();
printf("After second call \n");
funct1();
printf("After third call \n");
}
void funct1()
{
static int y = 0;
int z = 10;
printf("value of y %d z %d",y,z);
y=y+10;
}
value of y 0 z 10 After first call
value of y 10 z 10 After second call
value of y 20 z 10 After third call
