Re: Significance of using + before function calls.

["Joel M. Pareja" <jpareja@infoweapons.com>]

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That must be a typographical error.

Because '+' does nothing to the return value of the function.
Also because there is no lvalue in the expression.

But with '-', there is an effect.


int dummy_func() { return 5; }

int num = -dummy_func();


As a result, num will be '-5'.

Vamsi wrote:
> 
> Joel M. Pareja wrote:
> 
>> The placement of '+' or '-' before the function call is performing a
>> unary operator on the return value of the function.
> 
> does it server any purpose ? , unary '+'  operator will not have any 
> significance effect on the return value
> 
> -Vamsi
> 
>>
>> Vamsi wrote:
>>
>>> Hi List,
>>>
>>> i have seen a code snippet which starts with + symbol,
>>>
>>> +system("ls -l");
>>>
>>> what is the significance of using + symbol before system.
>>>
>>> i also tried using + before printf ,, like +printf("Some text"); and 
>>> it is compiling and working tooo,,
>>>
>>> Can somebody clarify wht does that + signify??
>>>
>>> Thank You.
>>>
>>> -Vamsi
>>>
>>> -
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>>
> 
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