View Compilation Error

0_0_1777187_22869.cpp: In function `void sort(double*)':
0_0_1777187_22869.cpp:9: error: invalid operands of types `double' and `double*' to binary `operator<'
0_0_1777187_22869.cpp:11: error: cannot convert `double*' to `double' in assignment
0_0_1777187_22869.cpp:12: error: cannot convert `double' to `double*' in assignment