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

class bank
  {
      int  top;
      int  money[100];
      int  rest[100];
      char date[100][12];
      static int sum;
      public:
        bank() { top=0;}
      void bankin(char d[],int m)
      {   
          strcpy(data[top],d);        
          money[top]=m;
          sum=sum+m;
          rest[top]=sum;
          top=top++;
      }

      void bankout(char d[],int m)
      {  
          strcpy(data[top],d);
          money[top]=-m;
          sum=sum-m;
          rest[top]=sum;
          top=top++;
      }
      void disp()
      {
          int i;
          printf(" 日期  存入  取出 余额\n");
          for(i=0;i<top;i++)
          {
             printf("%8s",data[i]);
             if(money[i]<0)
              printf(" %6d",-money[i]);
             else
              printf("%6f",money[i]);
              printf("%6f\n",rest[i]);

          }
      }      
  };

  int bank::sum=0;
  void main()
  {
      bank obj;
      obj.bankin("2007.3.5",1000);
      obj.bankout("2007.3.8",100);
      obj.bankout("2007.3.15",200);
      obj.bankin("2007.4.1",100);
      obj.disp();
  }

要学会看懂编译系统的出错提示信息,
1.你在类中定义的 char date[100][12];与在成员函数中用的不一样strcpy(data[top],d);
其余出错信息下次再回答你

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

class bank
  {
      int  top;
      int  money[100];
      int  rest[100];
      char date[100][12];
      static int sum;
      public:
        bank() { top=0;}
      void bankin(char d[],int m)
      {   
          strcpy(date[top],d);         
          money[top]=m;
          sum=sum+m;
          rest[top]=sum;
          top=top++;
      }

      void bankout(char d[],int m)
      {  
          strcpy(date[top],d);
          money[top]=-m;
          sum=sum-m;
          rest[top]=sum;
          top=top++;
      }
      void disp()
      {
          int i;
          printf(" 日期  存入  取出 余额\n");
          for(i=0;i<top;i++)
          {
             printf("%8s",date[i]);
             if(money[i]<0)
              printf(" %6d",-money[i]);
             else
              printf("%6f",money[i]);
              printf("%6f\n",rest[i]);

          }
      }      
  };

  int bank::sum=0;
  void main()
  {
      bank obj;
      obj.bankin("2007.3.5",1000);
      obj.bankout("2007.3.8",100);
      obj.bankout("2007.3.15",200);
      obj.bankin("2007.4.1",100);
      obj.disp();
  }
可以 运行了