Could someone help me with C++ stuff?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

silvia S13 · 09-28-2002, 10:39 PM

I am trying to do something like:

if (blahblah(a))
{
...
}

This is the function:

bool blahblah(a)
{
bool return (a=5);
}

but it's giving me undeclared identifier.
What's going on?
I have #include<iostream> and using namespace std; on top, do I need something else???

I am a freshmen in college, and just learning this, and have no clue how to do it. Someone please help. Thanks a lot.

fodive · 09-29-2002, 01:04 AM

are you using bool blahaha as a global variable, cause i know in C that can give you oodles of trouble, but not sure about C++

silvia S13 · 09-29-2002, 08:34 AM

blahblah is a function.  This is in C++

Titan · 09-29-2002, 09:23 AM

Did you not define all those if statements in a main() function?

Kreator · 09-29-2002, 02:40 PM

First of all, you are supposed to put the type when u declare the function:
e.g - blahblah(int a)

second, i think you wonna return (a==5), cuz (a=5) just assignes 5 to a and returns true. and u just do "return ..." instead of "bool return". the program alrdy knows it's bool when u declared the function.

Hope this helps

silvia S13 · 09-29-2002, 04:56 PM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Kreator @ Sep. 29 2002,3:40)</td></tr><tr><td id="QUOTE">First of all, you are supposed to put the type when u declare the function:
e.g - blahblah(int a)

second, i think you wonna return (a==5), cuz (a=5) just assignes 5 to a and returns true. and u just do "return ..." instead of "bool return". the program alrdy knows it's bool when u declared the function.

Hope this helps</td></tr></table><span id='postcolor'>
Thanks a lot, I figured it out already, it was a mistake in the book about the "bool return", it's just return.  Also, I forgot to declare.

aqwkmf · 09-29-2002, 08:18 PM

i just started c++ this year too...im a senior in high school....i hope its not to hard

SimpleS14 · 09-29-2002, 09:39 PM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (aqwkmf @ Sep. 28 2002,10:18)</td></tr><tr><td id="QUOTE">i just started c++ this year too...im a senior in high school....i hope its not to hard</td></tr></table><span id='postcolor'>
It not hard in high school, but wait tell you get to college.

I'm at CS 211 (or level 2) and its giving me some tough times. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/huh.gif" border="0" valign="absmiddle" alt=':huh:'>

Hey silvia S13 what college do you go to?

Kreator · 09-29-2002, 09:41 PM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (GT specR @ Sep. 29 2002,10:39)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (aqwkmf @ Sep. 28 2002,10:18)</td></tr><tr><td id="QUOTE">i just started c++ this year too...im a senior in high school....i hope its not to hard</td></tr></table><span id='postcolor'>
It not hard in high school, but wait tell you get to college.

I'm at CS 211 (or level 2) and its giving me some trobule. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/huh.gif" border="0" valign="absmiddle" alt=':huh:'></td></tr></table><span id='postcolor'>
Lol, wait till you get to level 4 <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='

'> that's when the real pita starts.

silvia S13 · 10-02-2002, 05:47 AM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (GT specR @ Sep. 29 2002,10:39)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (aqwkmf @ Sep. 28 2002,10:18)</td></tr><tr><td id="QUOTE">i just started c++ this year too...im a senior in high school....i hope its not to hard</td></tr></table><span id='postcolor'>
It not hard in high school, but wait tell you get to college.

I'm at CS 211 (or level 2) and its giving me some tough times. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/huh.gif" border="0" valign="absmiddle" alt=':huh:'>

Hey silvia S13 what college do you go to?</td></tr></table><span id='postcolor'>
I am at Stevens Insititute of Technology, it's hard as hell.  I regret coming here.  It's a geek school.  What bout you guys?  Comp Sci is my major, but the classes have been easy so far, except that they don't teach and just tell you to read, and when there's a mistake in the book, it completely fucks me over like this time.

Kreator · 10-02-2002, 10:11 AM

University of Maryland College Park <- one of the top 10 comp sci schools <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='

'>

09-29-2002, 01:04 AM	#2
fodive Zilvia Junkie Join Date: Jun 2002 Location: Columbia, SC Age: 40 Posts: 548 Trader Rating: (0) Feedback Score: 0 reviews	are you using bool blahaha as a global variable, cause i know in C that can give you oodles of trouble, but not sure about C++ __________________ roots.

09-29-2002, 09:23 AM	#4
Titan Zilvia Junkie Join Date: Apr 2002 Location: Ontario, Canada Posts: 421 Trader Rating: (0) Feedback Score: 0 reviews	Did you not define all those if statements in a main() function? __________________ Sleep Doesn't Drink Beer

09-29-2002, 02:40 PM	#5
Kreator Nissanaholic! Join Date: Mar 2002 Location: MD Age: 41 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	First of all, you are supposed to put the type when u declare the function: e.g - blahblah(int a) second, i think you wonna return (a==5), cuz (a=5) just assignes 5 to a and returns true. and u just do "return ..." instead of "bool return". the program alrdy knows it's bool when u declared the function. Hope this helps __________________ кто болеет за Зенит, у того всегда стоит!

09-29-2002, 09:39 PM	#8
SimpleS14 Post Whore! Join Date: Feb 2002 Location: Philly Age: 42 Posts: 9,185 Trader Rating: (0) Rides Gallery: SimpleS14 Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (aqwkmf @ Sep. 28 2002,10:18)</td></tr><tr><td id="QUOTE">i just started c++ this year too...im a senior in high school....i hope its not to hard</td></tr></table><span id='postcolor'> It not hard in high school, but wait tell you get to college. I'm at CS 211 (or level 2) and its giving me some tough times. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/huh.gif" border="0" valign="absmiddle" alt=':huh:'> Hey silvia S13 what college do you go to? __________________ *Goals are dreams with a deadline.* L.H.O.O.Q.

09-29-2002, 09:41 PM	#9
Kreator Nissanaholic! Join Date: Mar 2002 Location: MD Age: 41 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (GT specR @ Sep. 29 2002,10:39)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (aqwkmf @ Sep. 28 2002,10:18)</td></tr><tr><td id="QUOTE">i just started c++ this year too...im a senior in high school....i hope its not to hard</td></tr></table><span id='postcolor'> It not hard in high school, but wait tell you get to college. I'm at CS 211 (or level 2) and its giving me some trobule. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/huh.gif" border="0" valign="absmiddle" alt=':huh:'></td></tr></table><span id='postcolor'> Lol, wait till you get to level 4 <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=''> that's when the real pita starts. __________________ кто болеет за Зенит, у того всегда стоит!

09-28-2002, 10:39 PM	#1
silvia S13 Join Date: Aug 2002 Posts: 41 Trader Rating: (0) Feedback Score: 0 reviews	I am trying to do something like: if (blahblah(a)) { ... } This is the function: bool blahblah(a) { bool return (a=5); } but it's giving me undeclared identifier. What's going on? I have #include<iostream> and using namespace std; on top, do I need something else??? I am a freshmen in college, and just learning this, and have no clue how to do it. Someone please help. Thanks a lot.

09-29-2002, 08:34 AM	#3
silvia S13 Join Date: Aug 2002 Posts: 41 Trader Rating: (0) Feedback Score: 0 reviews	blahblah is a function.  This is in C++

09-29-2002, 04:56 PM	#6
silvia S13 Join Date: Aug 2002 Posts: 41 Trader Rating: (0) Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Kreator @ Sep. 29 2002,3:40)</td></tr><tr><td id="QUOTE">First of all, you are supposed to put the type when u declare the function: e.g - blahblah(int a) second, i think you wonna return (a==5), cuz (a=5) just assignes 5 to a and returns true. and u just do "return ..." instead of "bool return". the program alrdy knows it's bool when u declared the function. Hope this helps</td></tr></table><span id='postcolor'> Thanks a lot, I figured it out already, it was a mistake in the book about the "bool return", it's just return.  Also, I forgot to declare.

09-29-2002, 08:18 PM	#7
aqwkmf Zilvia Junkie Join Date: Apr 2002 Location: not there. Posts: 414 Trader Rating: (0) Feedback Score: 0 reviews	i just started c++ this year too...im a senior in high school....i hope its not to hard

10-02-2002, 05:47 AM	#10
silvia S13 Join Date: Aug 2002 Posts: 41 Trader Rating: (0) Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (GT specR @ Sep. 29 2002,10:39)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (aqwkmf @ Sep. 28 2002,10:18)</td></tr><tr><td id="QUOTE">i just started c++ this year too...im a senior in high school....i hope its not to hard</td></tr></table><span id='postcolor'> It not hard in high school, but wait tell you get to college. I'm at CS 211 (or level 2) and its giving me some tough times. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/huh.gif" border="0" valign="absmiddle" alt=':huh:'> Hey silvia S13 what college do you go to?</td></tr></table><span id='postcolor'> I am at Stevens Insititute of Technology, it's hard as hell.  I regret coming here.  It's a geek school.  What bout you guys?  Comp Sci is my major, but the classes have been easy so far, except that they don't teach and just tell you to read, and when there's a mistake in the book, it completely fucks me over like this time.

10-02-2002, 10:11 AM	#11
Kreator Nissanaholic! Join Date: Mar 2002 Location: MD Age: 41 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	University of Maryland College Park <- one of the top 10 comp sci schools <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=''> __________________ кто болеет за Зенит, у того всегда стоит!