what does "for( ; ; )" mean in C program

[bobby]

hello group,
what does for( ; ; ) mean in C program

Thanks

[Walter Roberson]

In article <25************ *************** *******@j20g200 0hsi.googlegrou ps.com>,
bobby <bs*****@gmail. comwrote:

>what does for( ; ; ) mean in C program

This is a loop.

Do no initializations .

Do not test any condition to see whether you should continue.

Do not do anything after the end of a loop before the beginning
of the next loop through.
In summary: for(;;) is another way of writing while (1)
which is an infinite loop (unless broken out of somewhere
in the middle.)
--
'Roberson' is my family name; my given name is 'Walter'.

[bobby]

On Feb 1, 3:52 pm, [e-mail] c-cnrc.gc.ca (Walter Roberson)
wrote:

In article <25dd47d5-b599-4ed0-8f9d-9b84936a8...@j2 0g2000hsi.googl egroups.com>,

bobby <bsim...@gmail. comwrote:

what does for( ; ; ) mean in C program

This is a loop.

Do no initializations .

Do not test any condition to see whether you should continue.

Do not do anything after the end of a loop before the beginning
of the next loop through.

In summary: for(;;) is another way of writing while (1)
which is an infinite loop (unless broken out of somewhere
in the middle.)
--
'Roberson' is my family name; my given name is 'Walter'.

Thank a lot

[Martin Ambuhl]

bobby wrote:

hello group,
what does for( ; ; ) mean in C program

while (1)

[Kenny McCormack]

In article <60************ *@mid.individua l.net>,
Martin Ambuhl <ma*****@earthl ink.netwrote:

>bobby wrote:

>hello group,
what does for( ; ; ) mean in C program

while (1)

I always thought it meant:

while(27)

I guess it depends on what part of town you're from.

[sid]

On Feb 2, 1:48*am, bobby <bsim...@gmail. comwrote:

hello group,
what does for( ; ; ) mean in C program

Thanks

It also means for(;1;);
A 'while()' loop is equivalent to 'for(;;)'

[Ben Pfaff]

sid <ki***********@ gmail.comwrites :

A 'while()' loop is equivalent to 'for(;;)'

while() is not valid syntax. I think you mean that a while(1)
loop is equivalent to for(;;).
--
char a[]="\n .CJacehknorstu" ;int putchar(int);in t main(void){unsi gned long b[]
={0x67dffdff,0x 9aa9aa6a,0xa77f fda9,0x7da6aa6a ,0xa67f6aaa,0xa a9aa9f6,0x11f6} ,*p
=b,i=24;for(;p+ =!*p;*p/=4)switch(0[p]&3)case 0:{return 0;for(p--;i--;i--)case+
2:{i++;if(i)bre ak;else default:continu e;if(0)case 1:putchar(a[i&15]);break;}}}

[=?iso-8859-1?q?Tom=E1s_=D3_h=C9ilidhe?=]

Ben Pfaff:

sid <ki***********@ gmail.comwrites :

>A 'while()' loop is equivalent to 'for(;;)'

while() is not valid syntax. I think you mean that a while(1)
loop is equivalent to for(;;).

But the extra-paranoid don't use it coz they don't want 1 to be evaluted
upon every iteration ;-)

--
Tomás Ó hÉilidhe

[Michal Nazarewicz]

Harald van Dijk <tr*****@gmail. comwrites:

Some people avoid using while(1) because they have to deal with broken
tools that give warnings for while(1) that they don't give for for(;;).

for(;;) is also one character shorter then while(1). :P

--
Best regards, _ _
.o. | Liege of Serenly Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michal "mina86" Nazarewicz (o o)
ooo +--<mina86*tlen.pl >--<jid:mina86*jab ber.org>--ooO--(_)--Ooo--

[Chris Thomasson]

"Michal Nazarewicz" <mi****@tlen.pl wrote in message
news:87******** ****@erwin.mina 86.com...

Harald van Dijk <tr*****@gmail. comwrites:

>Some people avoid using while(1) because they have to deal with broken
tools that give warnings for while(1) that they don't give for for(;;).

for(;;) is also one character shorter then while(1). :P

:^)