Function like C# Array.Copy() in the C language

Question

I'm looking for a C function similar to the C# Array.Copy(). I found memcpy() only, but I need to copy from specific index too.

abelenky · Accepted Answer · 2012-04-09 13:31:53Z

7

If you have an array like this:

SomeType myArray[50];

And you want to copy elements indexed 19-29 (the 20th through 30th elements).

Then you do:

memcpy(dest, &myArray[19], 10 * sizeof(SomeType));

Note: this code-segment makes no provision for initializing myArray, or allocating memory to dest

answered Apr 9, 2012 at 13:31

abelenky

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Comments

Oliver Charlesworth · Accepted Answer · 2012-04-09 13:29:54Z

3

memcpy is all you have. If you want to copy specific ranges, it's something like this:

memcpy(dst, &src[i_start], num_to_copy * sizeof(*src));

answered Apr 9, 2012 at 13:29

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GregC · Accepted Answer · 2012-04-09 13:29:50Z

1

Use pointer arithmetic. It's evil, but in C, it's your friend.

answered Apr 9, 2012 at 13:29

GregC

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