View Compilation Error

0_0_35419347_17748.cpp:23:1: error: stray '\243' in program
 f=1；
 ^
0_0_35419347_17748.cpp:23:1: error: stray '\273' in program
0_0_35419347_17748.cpp: In function 'int ans(char*)':
0_0_35419347_17748.cpp:24:4: error: expected ';' before 'k'
    k=(k*10+n[i]-'0')%5;
    ^