View Compilation Error

0_0_13157036_21754.cpp
0_0_13157036_21754.cpp(4) : error C2062: 意外的类型“char” 
0_0_13157036_21754.cpp(22) : error C2065: “c2”: 未声明的标识符
0_0_13157036_21754.cpp(31) : error C3861: “printf”:  找不到标识符
0_0_13157036_21754.cpp(33) : error C3861: “printf”:  找不到标识符
0_0_13157036_21754.cpp(40) : error C3861: “scanf”:  找不到标识符
0_0_13157036_21754.cpp(41) : error C3861: “getchar”:  找不到标识符
0_0_13157036_21754.cpp(45) : error C3861: “scanf”:  找不到标识符
0_0_13157036_21754.cpp(46) : error C3861: “getchar”:  找不到标识符
0_0_13157036_21754.cpp(47) : error C3861: “scanf”:  找不到标识符
0_0_13157036_21754.cpp(48) : error C3861: “getchar”:  找不到标识符
0_0_13157036_21754.cpp(50) : error C3861: “scanf”:  找不到标识符
0_0_13157036_21754.cpp(53) : error C3861: “scanf”:  找不到标识符
0_0_13157036_21754.cpp(54) : error C3861: “getchar”:  找不到标识符
0_0_13157036_21754.cpp(55) : error C2065: “c2”: 未声明的标识符
0_0_13157036_21754.cpp(55) : error C3861: “scanf”:  找不到标识符