[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fEUeZLQCvF5WK2qXjwzv55U4LTm-Sy2A2yeQK7aic010":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":27,"type":96},[],"2025-12-16 05:29:29",267773312,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},10,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","926d2266353944edbf48ca776528b3de","字符及其运算","字符 'A' 的 ASCII 码值为 ______,字符 'a' 的 ASCII 码值为 ______",[17,29,38,48,57,66,75,81,90,97],{"answer":18,"createTime":19,"id":20,"options":21,"question":26,"source":27,"type":28},[],"2025-11-29 12:47:53",245110688,[22,23,24,25],"char类型可以存储ASCII码范围内的字符","char类型只能存储英文字符,不能存储汉字","char类型在内存中通常占用1个字节","char类型可以用于存储整数,但超出范围时会发生溢出","关于C语言中的char类型,下列说法正确的有","v1",1,{"answer":30,"createTime":19,"id":31,"options":32,"question":37,"source":27,"type":28},[],245110689,[33,34,35,36],"字符变量可以像整数一样进行算术运算","字符变量只能存储单个字符,不能存储数字","字符变量可以存储ASCII码范围内的任意字符","字符变量不能用于比较操作,例如c1 == c2","关于C语言中字符类型的使用,下列说法正确的有",{"answer":39,"createTime":19,"id":40,"options":41,"question":46,"source":27,"type":47},[],245110690,[42,43,44,45],"0~255","-128~127","0~127","-127~128","在C语言中,字符类型char的取值范围通常是",0,{"answer":49,"createTime":19,"id":50,"options":51,"question":56,"source":27,"type":47},[],245110691,[52,53,54,55],"a","A","97","65","在C语言中,以下代码执行后,变量c的值是: c = 'A' + 32",{"answer":58,"createTime":19,"id":59,"options":60,"question":65,"source":27,"type":47},[],245110692,[61,62,63,64],"90","Z","122","z","在C语言中,以下代码执行后,输出结果是: char c = 'Z'; printf("%d", c)",{"answer":67,"createTime":19,"id":68,"options":69,"question":74,"source":27,"type":47},[],245110693,[70,71,72,73],"ch + 32","ch - 32","ch | 32","ch & 32","以下哪个表达式可以将字符变量 ch 中的大写字母转换为小写字母",{"answer":76,"createTime":19,"id":77,"options":78,"question":80,"source":27,"type":47},[],245110694,[64,61,55,79],"32","在 C 语言中,执行以下代码后,变量 ch 的值为多少? char ch = 'Z'; ch -= 32",{"answer":82,"createTime":19,"id":83,"options":84,"question":89,"source":27,"type":47},[],245110695,[85,86,87,88],"isdigit()","isalpha()","islower()","isupper()","在 C 语言中,以下哪个函数可以用来判断一个字符是否为字母",{"answer":91,"createTime":92,"id":93,"options":94,"question":95,"source":27,"type":96},[],"2025-11-29 12:50:16",245113521,[],"在C语言中,字符变量c存储的是字符的ASCII码值,因此可以通过printf("%d", c)输出其对应的整数值.例如,字符'A'的ASCII码值为______,字符'0'的ASCII码值为______",2,{"answer":98,"createTime":5,"id":6,"options":99,"question":15,"source":27,"type":96},[],[]]