C Pointers and Arrays

#include <stdio.h>

int main() {
    int arr[] = {10, 20, 30, 40, 50};
    int *ptr = arr;

    printf("Value of arr[0]: %d\n", arr[0]); // Output: Value of arr[0]: 10
    printf("Value of ptr: %d\n", ptr);     // Output: Value of *ptr: 10

    ptr++; // Move the pointer to the next element in the array

    printf("Value of arr[1]: %d\n", arr[1]); // Output: Value of arr[1]: 20
    printf("Value of ptr: %d\n", ptr);     // Output: Value of *ptr: 20

    return 0;
}

1. An array arr of integers is declared and initialized with values {10, 20, 30, 40, 50}.
2. A pointer variable ptr of type integer is declared and assigned the memory address of the first element of the array arr.
3. The printf function prints the value of arr[0], which is 10, and the value pointed to by ptr, which is also 10.
4. The ptr is incremented by 1, which makes it point to the next element of the array.
5. Another set of printf functions print the value of arr[1], which is 20, and the value pointed to by ptr, which is also 20.