foo.cpp:28:11: error: stray '\243' in program
           cout<<"x"；
           ^
foo.cpp:28:11: error: stray '\273' in program
foo.cpp: In function 'int main()':
foo.cpp:16:13: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    if(a[i]=0)
             ^
foo.cpp:17:4: error: 'coutinur' was not declared in this scope
    coutinur;
    ^
foo.cpp:29:11: error: expected ';' before 'cout'
           cout<<"^"<<i;
           ^