#include <stdio.h>
#include <string.h>
// (*ptr).x == ptr->x
typedef struct point
{
int xpos;
int ypos;
}Point;
void show_pos(Point pos) {
printf("%d %d",pos.xpos, pos.ypos);
}
Point get_current_pos(void) {
Point cur;
scanf("%d %d",&cur.xpos, &cur.ypos);
return cur;
}
void change(Point *ptr){
ptr-> xpos = (ptr->xpos)*-1;
ptr-> ypos = (ptr->ypos)*-1;
}
int main() {
Point cur_pos=get_current_pos();
change(&cur_pos);
show_pos(cur_pos);
return 0;
}
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