View Compilation Error

0_0_16000701_7799.cpp: In function 'int main()':
0_0_16000701_7799.cpp:13:25: error: redeclaration of 'point point1'
     struct point point1,point1,point3,Gpoint,midpoint;
                         ^
0_0_16000701_7799.cpp:13:18: note: 'point point1' previously declared here
     struct point point1,point1,point3,Gpoint,midpoint;
                  ^
0_0_16000701_7799.cpp:20:63: error: 'point2' was not declared in this scope
               scanf("%lf%lf%lf%lf%lf%lf",&point1.x,&point1.y,&point2.x,&point2.y,&point3.x,&point3.y);
                                                               ^