Programming Forums > Application Development > C

Navid · Jun 28th, 2005, 12:07 PM

How can you flush out an array? So it would have no values.

DaWei · Jun 28th, 2005, 12:14 PM

An array is a series of contiguous memory locations. These are typically little silicon hardware thangies that have their bit storage mechanisms in one state or another: zero (off) or one (on). They never have NO values. They may have unknown values, but values are there. The best you can do is initialize them to some known value which, to YOU, represents nada. A universally useful value for that does not exist since all values are subject to interpretation of one kind or another, depending up their presumed "type".

nnxion · Jun 28th, 2005, 12:15 PM

You can use the memset() function. Here's a link.

Navid · Jun 28th, 2005, 12:18 PM

nnxion, thanks that worked perfectly

True, but this is a char array im dealing with (should of said that before), so how would it be possible to set it all to 0 without the header <string.h>?

L7Sqr · Jun 28th, 2005, 12:32 PM

(Toggle Plain Text)

int i = 0; 
char val = '\0'; /* here val represents the value you want to assign */
for (;i < length_of_the_array; ++i)
   your_array[i] = val;

That should do what you want (so long as you are able to determine length_of_the_array)

Navid · Jun 28th, 2005, 12:35 PM

OK thanks. Solved

Jun 28th, 2005, 12:07 PM	#1
Navid Hobbyist Programmer Join Date: Feb 2005 Location: Canada Posts: 187 Rep Power: 4	Flushing out an array (solved) How can you flush out an array? So it would have no values. Last edited by navnav; Jun 28th, 2005 at 12:35 PM.

Jun 28th, 2005, 12:14 PM	#2
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	An array is a series of contiguous memory locations. These are typically little silicon hardware thangies that have their bit storage mechanisms in one state or another: zero (off) or one (on). They never have NO values. They may have unknown values, but values are there. The best you can do is initialize them to some known value which, to YOU, represents nada. A universally useful value for that does not exist since all values are subject to interpretation of one kind or another, depending up their presumed "type". __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Jun 28th, 2005, 12:15 PM	#3
nnxion Programming Guru Join Date: Jun 2005 Location: elemental plane Posts: 1,429 Rep Power: 5	You can use the memset() function. Here's a link. __________________ "Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for." -- Socrates

Jun 28th, 2005, 12:32 PM	#5
L7Sqr Hobbyist Programmer Join Date: Jun 2005 Location: here Posts: 152 Rep Power: 4	(Toggle Plain Text) int i = 0; char val = '\0'; /* here val represents the value you want to assign / for (;i < length_of_the_array; ++i) your_array[i] = val; int i = 0; char val = '\0'; / here val represents the value you want to assign */ for (;i < length_of_the_array; ++i) your_array[i] = val; That should do what you want (so long as you are able to determine length_of_the_array) __________________ "...and though our kids are blessed their parents let them shoulder all the blame." - The Quiet Things That No One Ever Knows [BrandNew]

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Jun 28th, 2005, 12:18 PM	#4
Navid Hobbyist Programmer Join Date: Feb 2005 Location: Canada Posts: 187 Rep Power: 4	nnxion, thanks that worked perfectly True, but this is a char array im dealing with (should of said that before), so how would it be possible to set it all to 0 without the header <string.h>?

Jun 28th, 2005, 12:35 PM	#6
Navid Hobbyist Programmer Join Date: Feb 2005 Location: Canada Posts: 187 Rep Power: 4	OK thanks. Solved

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Programming Forums > Application Development > C

Flushing out an array (solved)