View Compilation Error

0_0_35557186_23598.cpp:4:1: error: stray '\243' in program
 using namespace std；
 ^
0_0_35557186_23598.cpp:4:1: error: stray '\273' in program
0_0_35557186_23598.cpp:5:1: error: expected ';' before 'void'
 void trim0(string& b)
 ^
0_0_35557186_23598.cpp:17:11: error: '::main' must return 'int'
 void main()
           ^