Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
810 views
in Technique[技术] by (71.8m points)

c - What is the function of an asterisk before a function name?

I've been confused with what I see on most C programs that has unfamiliar function declaration for me.

void *func_name(void *param){
    ...
}

What does * imply for the function? My understanding about (*) in a variable type is that it creates a pointer to another variable thus it can be able to track what address at which the latter variable is stored in the memory. But in this case of a function, I don't know what this * asterisk implies.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

The asterisk belongs to the return type, and not to the function name, i.e.:

void* func_name(void *param) { . . . . . }

It means that the function returns a void pointer.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...