View Compilation Error

0_0_38245337_32248.cpp: In function 'void suffix2infix(char*)':
0_0_38245337_32248.cpp:135:26: error: 'strlen' was not declared in this scope
        int len = strlen(s); 
                          ^
0_0_38245337_32248.cpp:163:30: error: expected statement at end of input
                      case '-':   //而且都是双目操作符，因此前
                              ^
0_0_38245337_32248.cpp:163:30: error: expected '}' at end of input
0_0_38245337_32248.cpp:163:30: error: expected '}' at end of input
0_0_38245337_32248.cpp:163:30: error: expected '}' at end of input