20. write a program for 1.increment,2.decrement,3.addition,4.subtraction.txt

#include <stdio.h>

int main() {
    int arr[5] = {10, 20, 30, 40, 50};
    int *p = &arr[2];  // storing the address of the third element in p

    printf("Value at p = %d\n", *p);
    printf("Address of p = %p\n", p);


    // increment operation
    p++;
    printf("After increment, value at p = %d\n", *p);
    printf("After increment, address of p = %p\n", p);


    // decrement operation
    p--;
    printf("After decrement, value at p = %d\n", *p);
    printf("After decrement, address of p = %p\n", p);


    // addition operation
    p = p + 2;
    printf("After addition, value at p = %d\n", *p);
    printf("After addition, address of p = %p\n", p);


    // subtraction operation
    p = p - 1;
    printf("After subtraction, value at p = %d\n", *p);
    printf("After subtraction, address of p = %p\n", p);

    return 0;
}