Significance of using + before function calls.

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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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