#include<stdio.h>

int main() {
    int x;
    int *ptr;

    ptr=&x;
    *ptr= 0; //x=0

    printf(" x=%d\n",x);//0
    printf("*ptr=%d\n",*ptr);//0

    *ptr +=5;//x=5
    printf("x=%d\n",x);//5
    printf("*ptr=%d\n",*ptr);//5

    (*ptr)++;
    printf("x=%d\n",x);//6
    printf("*ptr=%d\n",*ptr);//6
    return 0;
}