print(‘{0:9^9}’.format(‘DUT’))的输出结果是
时间: 2024-01-13 14:02:42 浏览: 16
`print('{0:9^9}'.format('DUT'))` 的输出结果是:
```
^^^DUT^^^
```
这是因为 `{}` 中的 `0` 表示占位符中的第一个参数, `:9^9` 是格式化字符串的格式说明符,其中 `9` 表示总宽度为9个字符, `^` 表示居中对齐,如果原字符串不足9个字符,则使用 `^` 填充。所以,在这个例子中,由于字符串 'DUT' 长度为3,因此会在前后各填充3个 `^` 符号,使得最终的字符串总长度为9个字符。
相关问题
P_Sys:POINTER TO DUT00_Sys; P_Pump:POINTER TO DUT01_Pump; P_EV:POINTER TO DUT02_EV; FB_Pump: ARRAY[0..9] OF FB01_Pump; FB_EV: ARRAY[0..9] OF FB02_EV; Link: BOOL; SIM:BOOL;解释一下这段代码
This code declares variables and data types using a programming language syntax. Here is a breakdown of what each line means:
- P_Sys: POINTER TO DUT00_Sys; This declares a pointer variable named P_Sys that will point to an instance of the data type DUT00_Sys.
- P_Pump: POINTER TO DUT01_Pump; This declares a pointer variable named P_Pump that will point to an instance of the data type DUT01_Pump.
- P_EV: POINTER TO DUT02_EV; This declares a pointer variable named P_EV that will point to an instance of the data type DUT02_EV.
- FB_Pump: ARRAY[0..9] OF FB01_Pump; This declares an array variable named FB_Pump that can store 10 instances of the data type FB01_Pump.
- FB_EV: ARRAY[0..9] OF FB02_EV; This declares an array variable named FB_EV that can store 10 instances of the data type FB02_EV.
- Link: BOOL; This declares a Boolean variable named Link that can store either a true or false value.
- SIM: BOOL; This declares another Boolean variable named SIM that can store either a true or false value.
Without more context or information about the programming language used, it's difficult to provide more specific details about what this code does.
P_Sys:POINTER TO DUT00_Sys; P_Pump:POINTER TO DUT01_Pump; P_EV:POINTER TO DUT02_EV; FB_Pump: ARRAY[0..9] OF FB01_Pump; FB_EV: ARRAY[0..9] OF FB02_EV; Link: BOOL; SIM:BOOL;中文解释一下这个代码
这段代码定义了四个指针变量和两个函数块数组变量。其中,P_Sys指向DUT00_Sys变量,P_Pump指向DUT01_Pump变量,P_EV指向DUT02_EV变量。FB_Pump是一个长度为10的函数块数组,每个元素都是一个FB01_Pump函数块。FB_EV是一个长度为10的函数块数组,每个元素都是一个FB02_EV函数块。Link和SIM都是布尔类型的变量。