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单选题
有如下程序: struct person {  char name[10];  char sex;  float weight; }zhangsan, *ptr; ptr=&zhangsan; 若要从键盘读入姓名给结构体变量zhangsan的name成员,输入项错误的是(  )。
A

scanf(%s,zhangsan->name);

B

scanf(%s,zhangsan.name);

C

scanf(%s,ptr->name);

D

scanf(%s,(*ptr).name);


参考答案

参考解析
解析:
可用以下3种形式来引用结构体变量中的成员:①结构体变量名.成员名;②指针变量名->成员名;③(*指针变量名).成员名。程序定义了一个结构体变量zhangsan,一个结构体指针ptr,并且使指针指向变量 zhangsan。A项zhangsan为结构体变量名,不能用->引用其成员,A项错误。zhangsan.name、ptr->name、(*ptr).name均是正确的引用结构体变量成员的方式。答案选择A选项。
更多 “单选题有如下程序: structperson {  charname[10];  charsex;  floatweight; }zhangsan,*ptr; ptr=zhangsan; 若要从键盘读入姓名给结构体变量zhangsan的name成员,输入项错误的是(  )。A scanf(%s,zhangsan-name);B scanf(%s,zhangsan.name);C scanf(%s,ptr-name);D scanf(%s,(*ptr).name);” 相关考题
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