C++ signed char 转 string
时间: 2023-11-18 21:03:14 浏览: 39
可以使用stringstream来将signed char转换为string,示例代码如下:
```c++
#include <iostream>
#include <sstream>
int main() {
signed char c = 'a';
std::stringstream ss;
ss << c;
std::string str = ss.str();
std::cout << str << std::endl;
return 0;
}
```
输出结果为:
```
a
```
相关问题
signed char
Signed char is a data type in C programming language which is used to store integer values. It is similar to the char data type, but with the added feature of being able to store negative values. A signed char can store values between -128 and 127. The keyword used to declare a signed char variable is "signed char".
For example:
signed char x = -10;
In this example, the variable x is declared as a signed char and is initialized with the value -10. This means that x can store any value between -128 and 127.
unsigned char和char和signed char
在C++中,char,signed char和unsigned char是三个不同的数据类型。它们都表示一个字节(8位),但有些差异:
- char:可以表示有符号或无符号字符,具体取决于编译器。一些编译器将char视为有符号类型,而另一些则视为无符号类型。如果char被视为有符号类型,则其范围是-128到127;如果它被视为无符号类型,则范围是0到255。
- signed char:表示有符号字符,范围是-128到127。
- unsigned char:表示无符号字符,范围是0到255。
在C++中,可以使用强制类型转换将char转换为signed char或unsigned char,也可以将signed char或unsigned char转换为char。请注意,从有符号类型转换为无符号类型或反之亦然可能导致值的改变,因为它们的范围不同。因此,进行类型转换时要小心。