View Compilation Error

0_0_22584769_14399.c: In function 'main':
0_0_22584769_14399.c:6:49: error: 'EOF00' undeclared (first use in this function)
     while(scanf("%d %d %d %d",&x1,&y1,&x2,&y2)!=EOF00)
                                                 ^
0_0_22584769_14399.c:6:49: note: each undeclared identifier is reported only once for each function it appears in