c-pointers-simple.c

#include <stdio.h>

int main() {
    int value = 10;     
    int *pointer = &value;  

    // print the address of the variable and the pointer value
    printf("Address of 'value': %p\n", (void *)&value);
    printf("Value of 'pointer': %p\n", (void *)pointer);

    // print the value pointed to by the pointer
    printf("Value at the address pointed by 'pointer': %d\n", *pointer);

    // change the value pointed to by the pointer
    *pointer = 20;
    printf("New value of 'value' after modification through pointer: %d\n", value);

    // pointer arithmetic (incrementing pointer)
    pointer++;
    printf("Address after incrementing pointer: %p\n", (void *)pointer);
    printf("Garbage value at new pointer address: %d\n", *pointer);

    return 0;
}

`#include <stdio.h>

int main() {
int value = 10;
int *ptr = &value; // ptr now holds the address of value

printf("Address stored in pointer ptr: %p\n", (void *)ptr);
printf("Value at the address stored in ptr: %d\n", *ptr);
printf("Address of the pointer ptr itself: %p\n", (void *)&ptr);

return 0;

}`