pointers are easy but syntax is sucks.

pointers.c

#include <stdio.h>

int main (void) {
    int k = 42;
    int *pointerToKadress;
    pointerToKadress = &k; // an address | without asterisk
    *pointerToKadress = 29; // a value placed at this address | go to this location and do something
    printf("%s updated\n", *pointerToKadress == k ? "true" : "false"); // true
    printf("%s updated|address %i\n", pointerToKadress == k ? "true" : "false", pointerToKadress); // false
}