struct product { char code[5]; float price; }y[4]={"100",100}; 一下表达式错误的是:A (*y).code[0]='2' B y[0].code[0]='2' C y->price=10 D (*y)->price=10
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 14:41:17
![struct product { char code[5]; float price; }y[4]={](/uploads/image/z/4694886-54-6.jpg?t=struct+product+%7B+char+code%5B5%5D%3B+float+price%3B+%7Dy%5B4%5D%3D%7B%22100%22%2C100%7D%3B+%E4%B8%80%E4%B8%8B%E8%A1%A8%E8%BE%BE%E5%BC%8F%E9%94%99%E8%AF%AF%E7%9A%84%E6%98%AF%EF%BC%9AA+%EF%BC%88%2Ay%29.code%5B0%5D%3D%272%27+B+y%5B0%5D.code%5B0%5D%3D%272%27+C+y-%3Eprice%3D10+D+%28%2Ay%29-%3Eprice%3D10)
struct product { char code[5]; float price; }y[4]={"100",100}; 一下表达式错误的是:A (*y).code[0]='2' B y[0].code[0]='2' C y->price=10 D (*y)->price=10
struct product { char code[5]; float price; }y[4]={"100",100}; 一下表达式错误的是:
A (*y).code[0]='2' B y[0].code[0]='2'
C y->price=10 D (*y)->price=10
struct product { char code[5]; float price; }y[4]={"100",100}; 一下表达式错误的是:A (*y).code[0]='2' B y[0].code[0]='2' C y->price=10 D (*y)->price=10
y是数组类型,相当于一个地址
所以要访问成员需要用->操作符
*y是解引用后的结果,用 . 操作符访问成员
所以选D
应改成(*y).price=10
product
product
cha 经常看到…… cha
struct product { char code[5]; float price; }y[4]={100,100}; 一下表达式错误的是:A (*y).code[0]='2' B y[0].code[0]='2' C y->price=10 D (*y)->price=10
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