What Is Volatile Variable In C Code Example

Example 1: declaring a volatile in c

//volatile keyword usage in C #include<stdio.h>  int main(){     //different methods of declaring and initializing volatile variables      //method 1 - volatile int     int volatile number1 = 10;      //method 2 - volatile int     volatile int number2;     number2 = 20;      //method 3 - volatile pointer     int volatile *p1;     p1 = &number1;      //method 4 - volatile double pointer     volatile int **p2;     p2 = &p1;          printf("%d %d %d %d",number1,number2,*p1,**p2);     return 0; }

Example 2: volatile keyword in c

C's volatile keyword is a qualifier that is applied to a variable when it is declared. It tells the compiler that the value of the variable may change at any time--without any action being taken by the code the compiler finds nearby.