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Explanatory Question

Can a variable be both const and volatile?

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Answer with Explanation

yes, the const means that the variable cannot be assigned a new value. The value can be changed by other code or pointer. For example the following program works fine. 

 
int main(void)
{
    const volatile int local = 10;
    int *ptr = (int*) &local; 
    printf("Initial value of local : %d 
", local); 
    *ptr = 100; 
    printf("Modified value of local: %d 
", local); 
    return 0;
}