_getch()的用法 _getch()：注意开头的下划线，包含头文件conio.h。_getch()有些键也是不能读入，而且，当输入箭头时回显ffffffe0，不懂为什么。#include <conio.h>#include <stdio.h>int main(){    char c;    while(c = _getch()){        printf("%x\n",c);        switch(c){        case 0x48:            printf("UP\n");            break;        case 0x4b:            printf("Left\n");            break;        case 0x4d:            printf("Right\n");            break;        case 0x50:            printf("Down\n");            break;        default:            break;        }        printf("\n");    }    return 0;}

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