View Compilation Error

0_0_21601264_30014.cpp:15:19: error: stray '#' in program
    int temp=a[i]-'0';
                   ^
0_0_21601264_30014.cpp:15:25: error: stray '#' in program
    int temp=a[i]-'0';
                         ^
0_0_21601264_30014.cpp: In function 'int main()':
0_0_21601264_30014.cpp:15:20: error: lvalue required as unary '&' operand
    int temp=a[i]-'0';
                    ^