View Compilation Error

0_0_19042846_23971.cpp:6:1: error: stray '\243' in program
 while(scanf("%lf%lf%lf%lf"，&x1,&x2,&y1,&y2)!=EOF)
 ^
0_0_19042846_23971.cpp:6:1: error: stray '\254' in program
0_0_19042846_23971.cpp: In function 'int main()':
0_0_19042846_23971.cpp:6:30: error: invalid operands of types 'const char [13]' and 'double' to binary 'operator&'
 while(scanf("%lf%lf%lf%lf"，&x1,&x2,&y1,&y2)!=EOF)
                              ^