//【E5_2.c】判断键盘上输入的字符是否为英文字母、数字字符、字符/和其他字符。 // 1. ASCII码值小于等于32的为cotrol character // 2. 0~9为digit // 3. A~Z为capital letter // 4. a~z为lower letter // 5. 剩余的为oter character #include "stdio.h" void main() { 【空1】; //定义一个变量ch存放字符 printf("Enter a character:"); 【空2】; // 从键盘上输入一个字符赋值给ch变量 if(【空3】) printf("The character is a control character\n"); else if(【空4】) printf("The character \"%c\" is a digit\n",ch); // 若ch为7,则格式printf(" \"%c\" ",ch );的输出为?【空5】 else if(【空6】) printf("The character \"%c\" is a capital letter\n",ch); else if(【空7】) printf("The character \"%c\" is a lower letter\n",ch); else printf("The character is other character\n"); }