View Compilation Error

0_0_24122454_21860.cpp: In function 'int main()':
0_0_24122454_21860.cpp:22:16: error: expected ';' before 'x1'
       xd=x1>x3 x1:x3;  
                ^
0_0_24122454_21860.cpp:23:16: error: expected ';' before 'y1'
       yd=y1>y3 y1:y3;  
                ^
0_0_24122454_21860.cpp:24:16: error: expected ';' before 'x4'
       xu=x2>x4 x4:x2;  
                ^
0_0_24122454_21860.cpp:25:16: error: expected ';' before 'y4'
       yu=y2>y4 y4:y2;  
                ^