這是我的code:

 _________________________________________________

#include <stdio.h>
#include <string.h>

int main()
{
    int i, j;
    char str[500], u, change[500];
    while(gets(str)!=NULL) {
        scanf("%s", change);
        int a=strlen(str), b=strlen(change), cur=0;
        for(i=0; i<b; i++) {
            if(change[i]=='0'){
                cur=0;
                continue;
            }
            if(change[i]=='$'){
                cur=a;
                continue;
            }
            if(change[i]=='+'){
                cur++;
                continue;
            }
            if(change[i]=='-'){
                cur--;
                continue;
            }
            if(change[i]=='u') {
                if(str[cur]>=97&&str[cur]<=122)str[cur]-=32;
                cur++;
                continue;
            }
            if(change[i]=='i') {
                a++;
                for(j=a; j>cur; j--) {
                    str[j]=str[j-1];
                }
                str[cur]=change[i+1];
                i++;
                cur++;
                continue;
            }
            if(change[i]=='x') {
                if(cur!=a) {
                    for(j=cur; j<a; j++) {
                        str[j]=str[j+1];
                    }
                    a--;
                }
                continue;
            }
            if(change[i]=='s') {
                if((cur!=a)&&(cur!=a-1)) {
                    u=str[cur];
                    str[cur]=str[cur+1];
                    str[cur+1]=u;
                }
                continue;
            }

        }
        for(i=0; i<a; i++)printf("%c", str[i]);
        printf("\n");
    }
    return 0;
}

_________________________________

這是解題系統給我的回覆

請勿輸出題目未要求的文字:  good

請勿輸出題目未要求的文字:  oodg

我試了好幾次

還是看不懂為什麼那兩個測資就會沒過

 之前的文章我看不太懂

所以我才會發一篇

希望能有人幫我解惑

 感謝!