题解 | 坐标移动

#include <stdio.h>
int x;
int y;
char *parr;
int length;

void step();
void getlength();

int main(){
    char arr[10000];
    scanf("%s", arr);
    parr = arr;

    while(*parr != '\0'){
        step();
        parr ++;
    }
    printf("%d,%d", x, y);
}
void getlength(){
    if(*parr == 'A'){
        x -= length;
    }
    else if(*parr == 'D'){
        x += length;
    }
    else if(*parr == 'W'){
        y += length;
    }
    else if(*parr == 'S'){
        y -= length;
    }
}
void step(){
    if(*parr == 'A' || *parr == 'D' || *parr == 'W' || *parr == 'S'){
        if(*(parr+1)>='0' && *(parr+1)<='9'){
            if(*(parr+2) == ';'){
                length = *(parr+1)-48;
                getlength();
            }
            else if(*(parr+2)>='0' && *(parr+2)<='9' && *(parr+3) == ';'){
                length = 10*(*(parr+1)-48)+*(parr+2)-48;
                getlength();
            }
        }
    }
    while(*parr != ';'){
        parr++;
    }
}