View Compilation Error

0_0_28768316_31871.cpp: In function 'int main()':
0_0_28768316_31871.cpp:82:12: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
     if(ch=='A')
            ^
0_0_28768316_31871.cpp:91:17: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
     else if(ch=='B')
                 ^