View Compilation Error

0_0_17632832_11886.cpp: In function 'int main()':
0_0_17632832_11886.cpp:4:3: error: 'x1' was not declared in this scope
 { x1,x2,y1,y2,result; 
   ^
0_0_17632832_11886.cpp:4:6: error: 'x2' was not declared in this scope
 { x1,x2,y1,y2,result; 
      ^
0_0_17632832_11886.cpp:4:9: error: 'y1' was not declared in this scope
 { x1,x2,y1,y2,result; 
         ^
0_0_17632832_11886.cpp:4:12: error: 'y2' was not declared in this scope
 { x1,x2,y1,y2,result; 
            ^
0_0_17632832_11886.cpp:4:15: error: 'result' was not declared in this scope
 { x1,x2,y1,y2,result; 
               ^