题解 | #坐标移动#

#include <stdio.h>
#include <string.h>
char s[10001] = {};

int main() {
    unsigned int start = 0, end = 0;
    unsigned int length = 0;
    int x = 0, y = 0;
    int temp = 0;

    scanf("%s", s);
    length = strlen(s);
    for (int i = 0; i < length; ++i) {
        if (s[i] == ';') {
            end = i - 1;
            if ((s[start] == 'W')
                    || (s[start] == 'A')
                    || (s[start] == 'S')
                    || (s[start] == 'D')) {
                temp = 0;
                for (int j = start + 1; j <= end; ++j) {
                    if (s[j] >= '0' && s[j] <= '9') {
                        temp = temp * 10 + s[j] - '0';
                    } else {
                        temp = 0;
                        break;
                    }
                }
                switch (s[start]) {
                    case 'W':
                        y += temp;
                        break;
                    case 'A':
                        x -= temp;
                        break;
                    case 'S':
                        y -= temp;
                        break;
                    case 'D':
                        x += temp;
                        break;
                    default:
                        break;
                }
            } else {}
            start = i + 1;
        } else {}

    }

    printf("%d,%d", x, y);

    return 0;
}