View Compilation Error

0_0_19394265_8649.cpp:15:40: error: stray '#' in program
    last++;<pre name="code" class="cpp">#include <iostream>
                                        ^
0_0_19394265_8649.cpp: In function 'char* change(char*)':
0_0_19394265_8649.cpp:15:11: error: expected primary-expression before '<' token
    last++;<pre name="code" class="cpp">#include <iostream>
           ^
0_0_19394265_8649.cpp:15:12: error: 'pre' was not declared in this scope
    last++;<pre name="code" class="cpp">#include <iostream>
            ^
0_0_19394265_8649.cpp:18:21: error: a function-definition is not allowed here before '{' token
 char *change(char*s){   //运用指针定位字符串的首字母
                     ^
0_0_19394265_8649.cpp:46:1: error: expected '}' at end of input
 }
 ^
0_0_19394265_8649.cpp:46:1: error: expected '}' at end of input
0_0_19394265_8649.cpp:46:1: error: expected '}' at end of input