View Compilation Error

0_0_32855462_1313.cpp: In function 'void toXor(int)':
0_0_32855462_1313.cpp:50:20: error: expected primary-expression before '<' token
     if(f[rt] != -1)<span style="font-family: Arial, Helvetica, sans-serif;">//如果需要改变，就不需要进行异或。</span>
                    ^
0_0_32855462_1313.cpp:50:21: error: 'span' was not declared in this scope
     if(f[rt] != -1)<span style="font-family: Arial, Helvetica, sans-serif;">//如果需要改变，就不需要进行异或。</span>
                     ^
0_0_32855462_1313.cpp: In function 'void update(int, int, char, int, int, int)':
0_0_32855462_1313.cpp:110:36: error: expected primary-expression before '<' token
     else if(op == 'I' || op == 'C')<span style="font-family: Arial, Helvetica, sans-serif;">//修改[l,r]集合外的断点</span>
                                    ^
0_0_32855462_1313.cpp:110:37: error: 'span' was not declared in this scope
     else if(op == 'I' || op == 'C')<span style="font-family: Arial, Helvetica, sans-serif;">//修改[l,r]集合外的断点</span>
                                     ^