What is the meaning of "return ret < 0"?

Question

Functions can return a number, pointer, and most of the type you want, but what's the meaning of it?

return ret < 0;

(This code snippet is from the last line of the code, ffprobe.c.)

Answer 1

It will return either 1 or 0 depending upon the condition ret < 0 is true or false.

You can understand this as

if(ret < 0)
    return 1;
else  
    return 0;