View Compilation Error

0_0_33882265_10937.cpp: In function 'int main()':
0_0_33882265_10937.cpp:14:50: error: expected primary-expression before ';' token
       else if(str[i]=='<'&&str[i+1]=='<'){i++****;printf("《");}
                                                  ^
0_0_33882265_10937.cpp:15:50: error: expected primary-expression before ';' token
       else if(str[i]=='>'&&str[i+1]=='>'){i++****;printf("》");}
                                                  ^
0_0_33882265_10937.cpp:18:7: error: expected primary-expression before 'if'
       if(str[i]<0)******
       ^