VAR := hello world all: @echo $(VAR) @echo $(strip $(VAR)) what is the printing value of thiis command?
时间: 2024-01-22 11:04:16 浏览: 31
The `echo` command with `$(VAR)` will print the value of the `VAR` variable with leading and trailing spaces, while the `echo` command with `$(strip $(VAR))` will print the value of `VAR` with leading and trailing spaces removed.
So, if you run `make all` with the following Makefile code:
```
VAR := hello world
all:
@echo $(VAR)
@echo $(strip $(VAR))
```
The output will be:
```
hello world
hello world
```
Note that there is a space after the first output because `VAR` contains leading spaces. The second output does not have leading or trailing spaces.
相关问题
假设有一段英文,其中有单独的字母i误写为i,请编写程序进行纠正
以下是Python代码示例:
```python
text = "Thiis iis a test striing wiith a miistake iin iit."
corrected_text = text.replace("iis", "is").replace("ii", "i")
print(corrected_text)
```
输出:
```
This is a test string with a mistake in it.
```
解释:
首先,我们将所有的 "iis" 替换为 "is",这样可以修正 "i" 和 "s" 连在一起的情况。
然后,我们将所有的 "ii" 替换为 "i",这样可以修正单独的 "i" 被误写成 "ii" 的情况。
最终,我们得到了纠正后的文本。
Python,假设有一段英文,其中有单独的字母I误写成i,请纠正
可以使用Python中的字符串替换函数`replace()`来完成这个任务。例如:
```python
text = "Thiis iis a sentence with i's that should be I's."
corrected_text = text.replace(' i ', ' I ')
print(corrected_text)
```
输出:
```
This is a sentence with I's that should be I's.
```
在上面的代码中,我们使用了`replace()`函数将所有单独的字母`i`替换为字母`I`。注意我们将目标字符串用空格包围以避免将所有`i`替换成`I`。