#include <iostream>
        #include <string.h>
        #include <stdio.h>
        using namespace std;

        int main()
        {
            char a[1005],b[1005];
        int y=0,q;
        scanf("%d",&q);
            while(q--)
            {   scanf("%s %s",a,b);
                char m[1006];
                int c[1005]={0},d[1005]={0};
                int e=0,f=0,i=0,k=0,v,mx,len1,len2,w,x=0;
                len1=strlen(a);
                len2=strlen(b);
                if(len1>len2){mx=len1;}else{mx=len2;}
                for(i=len1-1;i>=0;i--)
                {
                    c[e]=a[i]-'0';
                    e++;
                }
                for(i=len2-1;i>=0;i--)
                {
                    d[f]=b[i]-'0';
                    f++;
                }
                v=0;
                w=mx;
             while(w--)
             {
                 c[k]=c[k]+d[k]+v;
                 if(c[k]>9)
                 {
                     c[k]=c[k]-10;
                     v=1;
                 }else{v=0;}
                 k++;
             }
             if(v==1)
             {
                 c[mx]=1;
                 mx++;
             }
             e=0;
             while(mx--)
             {
                 m[e]=c[mx]+48;
                 e++;
             }
             y++;
             printf("Case %d:\n",y);
             printf("%s + %s = %s\n",a,b,m);
             if(q>0){printf("\n");}
              e=0,f=0,i=0,k=0;
             memset(a,0,sizeof(a));
memset(b,0,sizeof(b));memset(c,0,sizeof(c));memset(d,0,sizeof(d));memset(m,0,sizeof(m));
             }
             return 0;
        }

自己输出时格式是对的但是用c++判是Presentation Error，用g++是WA
求助高手

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能查到正确答案我知道，但是我想知道自己的有什么错误，麻烦各位大神用编译器运行一下看看呗

memset(a,0,sizeof(a));
 memset(b,0,sizeof(b));
//memset(c,0,sizeof(c));memset(d,0,sizeof(d));
memset(m,0,sizeof(m));
要理解memset是怎么工作的，char m[1006]={0};

杭电来报道