View Compilation Error

0_0_32289444_25974.cpp: In function 'int main()':
0_0_32289444_25974.cpp:17:14: error: 'spanstyle' was not declared in this scope
        if(n<<spanstyle="color: #053df5">4) ans=1024;
              ^
0_0_32289444_25974.cpp:17:41: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
        if(n<<spanstyle="color: #053df5">4) ans=1024;
                                         ^