1. What is the output of the following code?

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int x = 10, y = 20; int* p1 = &x; int* p2 = &y; printf("%d %d\n", *p1, *p2);

1. What is the output of the following code?

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int x = 10; int* p1 = &x; int* p2 = p1; *p2 = 20; printf("%d\n", x);

1. What is the output of the following code?

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int x = 10; int* p1 = &x; int* p2 = p1; p1 = NULL; printf("%d\n", *p2);

How can you pass an array of integers to a function and make the function able to modify the elements of the array?

What is the difference between a pointer and an array in C?

How can you check if a pointer is pointing to a valid memory location or not?

How can you pass a pointer to a function and make the function able to modify the pointer itself?

How can you allocate memory dynamically for an array of integers using pointers?

What is a pointer to a pointer in C and when is it useful?

How can you traverse an array using pointers?

Answers:

1. The output is "10 20".