View Compilation Error

0_0_30720528_11298.cpp:8:1: error: stray '\243' in program
 ans=0；
 ^
0_0_30720528_11298.cpp:8:1: error: stray '\273' in program
0_0_30720528_11298.cpp: In function 'int main()':
0_0_30720528_11298.cpp:9:8: error: expected ';' before 'for'
        for(int i=1;i<=n;i++)
        ^
0_0_30720528_11298.cpp:9:20: error: 'i' was not declared in this scope
        for(int i=1;i<=n;i++)
                    ^