What does do in C

Question

int qempty         return  f    r   1   0       In the above snippet  what does     mean   What can we replace it with

User · Answer

This is a ternary operator  it s basically an inline if statement  x   y   z   works like  if x  y else z   except  instead of statements you have expressions  so you can use it in the middle of a more complex statement   It s useful for writing succinct code  but can be overused to create hard to maintain code

User · Answer

You can just rewrite it as    int qempty    return f  r      Which does the same thing as said in the other answers

User · Answer

It s the conditional operator   a   b   c  It s a shortcut for IF THEN ELSE   means  if a is true  return b  else return c   In this case  if f  r  return 1  else return 0

User · Answer

This is commonly referred to as the conditional operator  and when used like this   condition   result if true   result if false       if the condition evaluates to true  the expression evaluates to result if true  otherwise it evaluates to result if false   It is syntactic sugar  and in this case  it can be replaced with  int qempty        if f    r            return 1         else            return 0          Note  Some people refer to    it as  the ternary operator   because it is the only ternary operator  i e  operator that takes three arguments  in the language they are using

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Just a note  if you ever see this   a   x     y    It s a GNU extension to the standard  see https   gcc gnu org onlinedocs gcc Conditionals html Conditionals    It is the same as  a   x   x   y

User · Answer

The question mark is the conditional operator  The code means that if f  r then 1 is returned  otherwise  return 0  The code could be rewritten as   int qempty       if f  r      return 1    else     return 0      which is probably not the cleanest way to do it  but hopefully helps your understanding

User · Answer

It is called the conditional operator   You can replace it with   int qempty         if  f    r  return 1      else return 0

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