When do we need to add a suffix after the number ?

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1.00/5 (1 vote)

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I haven't seen any benefit from the suffix

What I have tried:

Does it only deal with the exact number of bits needed?

Posted 10-Jan-23 5:26am

i want to code better

Updated 10-Jan-23 5:37am

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jeron1 10-Jan-23 11:32am

Can you give an example of what you mean?

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OriginalGriff · Accepted Answer · 2023-01-10T05:37:00

Solution 1

If you mean "1.2F", "12L", "12U", ... and so on, it tells the compiler what type of number it is "float", "long", "unsigned" and so forth.

This means there is no "guesswork" involved - when you use the constant it is a specific type, and the compiler won't complain if you try to put it into a variable unless that is a different type that would cause data loss.

Posted 10-Jan-23 5:37am

OriginalGriff

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i want to code better 10-Jan-23 22:57pm

So when I declare long=123, is it necessary to add the L at the end,sir ?

OriginalGriff 11-Jan-23 0:44am

It's not strictly necessary in that case, because the integer constant value can be "promoted" to long without loss of data.
But it is a good idea!
C is an old language, and so are most of the compilers - so the more clues you give them the better the result is likely to be.