可以通过ASCII码来判断 将键盘输入的字符存在变量 c 中 if ('a' <= c && c <= 'z') { printf("小写字母\n"); } else if ('A' <= c && c <= 'Z') { printf("大写字母\n"); } else if ('0' <= c && c <= '9') { printf("数字\n...
char c;cin>>c;if(c>='0'||c<='9')cout<<"digital character";if(c>='a"||c<='z')cout<<"alphabetic character";else cout<<"other character";大致就这样吧