Challenge: Move a Point

Lab C Intermediate 20 points

Define typedef struct { int x; int y; } Point; and a function void move(Point *p, char dir) that moves the point one step: U is y+1, D is y−1, R is x+1, L is x−1. Start at (0, 0), read a word of moves like UURDL, apply them all and print the final position.

Input

One word made of U, D, L, R.

Output

(x, y)

Example

Input

UURDL

Output

(0, 1)

Sample input available Sample output available

Editor

Hints

Pass &pos so move can change the real point.

Inside move, use p->x and p->y.

Solution explanation

Because move gets a pointer, every step changes the same pos variable in main.

Show solution

#include <stdio.h>

typedef struct {
    int x;
    int y;
} Point;

void move(Point *p, char dir) {
    if (dir == 'U') {
        p->y++;
    } else if (dir == 'D') {
        p->y--;
    } else if (dir == 'R') {
        p->x++;
    } else if (dir == 'L') {
        p->x--;
    }
}

int main() {
    char moves[101];
    scanf("%s", moves);
    Point pos;
    pos.x = 0;
    pos.y = 0;
    for (int i = 0; moves[i] != '\0'; i++) {
        move(&pos, moves[i]);
    }
    printf("(%d, %d)\n", pos.x, pos.y);
    return 0;
}

Output

Answer