View Compilation Error

0_0_17178112_15416.cpp:7:9: error: stray '\243' in program
         cout <<ａ＋ｂ<<endl;
         ^
0_0_17178112_15416.cpp:7:9: error: stray '\341' in program
0_0_17178112_15416.cpp:7:9: error: stray '\243' in program
0_0_17178112_15416.cpp:7:9: error: stray '\253' in program
0_0_17178112_15416.cpp:7:9: error: stray '\243' in program
0_0_17178112_15416.cpp:7:9: error: stray '\342' in program
0_0_17178112_15416.cpp: In function 'int main()':
0_0_17178112_15416.cpp:7:22: error: expected primary-expression before '<<' token
         cout <<ａ＋ｂ<<endl;
                      ^