int *str = "l love python";指出这一段代码里的错误
时间: 2024-02-19 13:57:17 浏览: 21
这段代码存在两个错误:
1. 变量str的类型为指向整型的指针int*,但是它被赋值为一个字符串常量"l love python"的地址。这会导致编译器发出警告或错误,因为字符串常量的类型是char*,而不是int*。
2. 字符串常量"l love python"是一个常量,它存储在程序的只读数据段中,不能被修改。如果程序试图修改这个字符串常量,就会导致运行时错误。
正确的代码应该是:
```
const char *str = "l love python";
```
这里使用了const关键字来声明str是一个指向常量字符的指针,这样就可以保证程序不会试图修改字符串常量的值。同时,由于字符串常量的类型是char*,所以可以用指向字符的指针const char*来指向它。
相关问题
解释这段代码:char *str = "01234"; int *p = (int *)str; printf("%X", *++p);
Null refers to a value that is absent, empty, or contains no data. It is often used to indicate that a variable or field has no value assigned to it. In programming, null is commonly used to represent the absence of an object or a pointer that points to nothing. It is also used in databases to represent missing or unknown data.
解释这段代码:char *str = "0123456789"; int *p = (int *)str; printf("\n%X\n", *++p);
As an AI language model, I do not have emotions or feelings. Therefore, the concept of "null" does not apply to me in the same way it does to humans. However, in computer programming, null refers to the absence of a value or a variable that has not been assigned a value.
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