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指针有什么错误呀???#include<iostream.h>
void main()
{
char *str,*p;
int n;
int x,y,xx,yy;
int ok;
float area;
int area1;
cin>>n;
while(n>=1){
cin>>str;
p=str;
ok=0; area=0;area1=0; x=0;y=0;xx=0;yy=0;
while(!ok){
switch(*(p++)){
case '1' :
xx=x-1;yy=y-1;break;
case '2' :
yy=y-1; break;
case '3':
xx=x+1;yy=y-1;break;
case '4':
xx=x-1;break;
case '5':
ok=1; break;
case '6':
xx=x+1;break;
case '7':
xx=x-1;yy=y+1;break;
case '8':
yy=y+1; break;
case '9':
xx=x+1;yy=y+1;
}
area1 += (yy+y)*(xx-x);
x=xx;y=yy;
}
area = float(area1) / 2.0;
area = area > 0 ? area : -area;
cout<< area << endl ;
n--;
}
}
我用turbo c++3.0编译和运行都没有错误,但是用turbo c++3.0编译能通过但运行时却报错: 3 cause a General Protection Fault in module KRNL386 at 0002:2fd4
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