How to debug C function in XCode Debugger

Question

In my iOS code, I have the following code

(char *)xmlTextReaderValue(reader)

How can I can see what this C function returns in XCode? I know that if it was Objective C object I could use po to print the object. Is there any alternative for C functions?

Answer 1

如果您的char *包含可打印的数据（例如以NULL结尾的格式良好的字符串，则可以简单地使用p命令，显式转换结果：

p (char *) xmlTextReaderValue(reader)