View Compilation Error

0_0_28795603_30308.cpp:26:3: error: stray '\243' in program
   printf（“%0.4lf\n”,F(mid,y));
   ^
0_0_28795603_30308.cpp:26:3: error: stray '\250' in program
0_0_28795603_30308.cpp:26:3: error: stray '\241' in program
0_0_28795603_30308.cpp:26:3: error: stray '\260' in program
0_0_28795603_30308.cpp:26:3: error: stray '\' in program
0_0_28795603_30308.cpp:26:3: error: stray '\241' in program
0_0_28795603_30308.cpp:26:3: error: stray '\261' in program
0_0_28795603_30308.cpp:27:1: error: stray '\243' in program
 ）
 ^
0_0_28795603_30308.cpp:27:1: error: stray '\251' in program
0_0_28795603_30308.cpp: In function 'int main()':
0_0_28795603_30308.cpp:26:14: error: unable to find numeric literal operator 'operator""lf'
   printf（“%0.4lf\n”,F(mid,y));
              ^
0_0_28795603_30308.cpp:26:14: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes