Re: How to egalise two strings - C / C++ / MFC Discussion Boards

Re: How to egalise two strings

ShilpiP27-Jul-07 2:11

ShilpiP

27-Jul-07 2:11

if(strcmp(s1,s2)==0)

Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

Re: How to egalise two strings

toxcct27-Jul-07 2:14

toxcct

27-Jul-07 2:14

s1 and s2 are std::strings...

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Re: How to egalise two strings

garfaoui27-Jul-07 2:18

garfaoui

27-Jul-07 2:18

Et cela pose problème? D'Oh! | :doh:

Re: How to egalise two strings

toxcct27-Jul-07 2:21

toxcct

27-Jul-07 2:21

pourquoi tu le prend comme ca ? je le signalais juste à celui qui te répondait que son code ne marche que si ce sont des char*, pas des strings Unsure | :~

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Re: How to egalise two strings

CPallini27-Jul-07 2:27

CPallini

27-Jul-07 2:27

OK, ragazzi, ora, rilassatevi... Big Grin | :-D

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: How to egalise two strings

toxcct27-Jul-07 2:31

toxcct

27-Jul-07 2:31

uhh, sorry, i don't understand much italian ! lol

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Re: How to egalise two strings

CPallini27-Jul-07 2:37

CPallini

27-Jul-07 2:37

Oh, pardon,
I assumed it was a multi-ethnic thread...
Big Grin | :-D

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: How to egalise two strings

garfaoui27-Jul-07 2:28

garfaoui

27-Jul-07 2:28

Oula je ne suis pas du tout enervé, choqué, ou autre. Je bois les paroles de tous ceux qui postent un message sur ce forum car je n´ai a mon actif ke 30h de langage c++. Je n´y connais pas grand chose. Smile | :)

Je suis actuellement en stage et je dois realiser ce programme. Cela fait maintenant une semaine que je suis dessus, et je sens qu´il est tout près d´aboutir.
Désolé si ma réponse a pu paraitre sèche, ce n´etait pas du tout l´esprit du message. C´est l´effet message ecrit qui ne transcrit pas le ton de la voix. Smile | :)

Re: How to egalise two strings

toxcct27-Jul-07 2:32

toxcct

27-Jul-07 2:32

ok, let's continue in english now.

you still didn't answered a question of mine...

what, for you, is the difference between equalize and compare 2 strings ?

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Re: How to egalise two strings

garfaoui27-Jul-07 2:35

garfaoui

27-Jul-07 2:35

to me,
compare is looking at 2 objects and see if they are equal or not.
egalise a and b is a=b (change the value of a or b so that it is equal to the other value)

is it clear D'Oh! | :doh:

Re: How to egalise two strings

toxcct27-Jul-07 2:39

toxcct

27-Jul-07 2:39

ok, i get what's your problem then... you are trying to speak english with french words Poke tongue | ;-P

don't say equalize but assign.

anyway, as you're using std::strings, just use the = operator for this, and == operator to compare their content.

std::string s1 = "Hello";
std::string s2 = "World";
 
ASSERT(s1 != s2);    // the objects contain different strings
 
s1 = s2;    //Assign s2 content into s1
ASSERT(s1 == s2);    // the objects contain same strings

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Re: How to egalise two strings

garfaoui27-Jul-07 2:44

garfaoui

27-Jul-07 2:44

OK, just to see if i have caught what you said:
I should use == to compare if string s1 has the same content with string s2.
That´s it?
Because I already have tried that and it doesn´t work... Cry | :((

Re: How to egalise two strings

garfaoui27-Jul-07 2:49

garfaoui

27-Jul-07 2:49

Hum ... i did a mistake while typing the code, i always typed: if(s1==s2) but the thing i wanted to check is if (s1!=s2)
I am so sorry for the loss of time.... Hmmm | :|

Anyway, thank you very much for your help!!!

Re: How to egalise two strings [modified]

toxcct27-Jul-07 2:50

toxcct

27-Jul-07 2:50

garfaoui wrote:
I should use == to compare if string s1 has the same content with string s2.
That´s it?

exactly. but be careful, the operator must be the overload of std::string class.

in the expression s1 == s2, if s1 is of type std::string, the code actually means to the compiler s1.operator==(s2) (calling then the function bool std::string::operator==(const std::string&)).
but if s1 is a basic C-Style string (a char* basically), the compiler will try to compare the addresses, not the string contents...

the context is exactly the same while using the operator != .

so, can you please post a relevant (but small) piece of code which can reproduce the error ?
also, specify to us the type of all the variables used, and which error you get (if it is a compiler error, linker error, or run-time error), and its message.

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Re: How to egalise two strings

Rage27-Jul-07 2:56

Rage

27-Jul-07 2:56

Francais et en stage au Portugal ?

Don't follow any man spiritually, don't do anything that will get you in sh*t if god is real - Bradml[^]

Re: How to egalise two strings

garfaoui27-Jul-07 2:57

garfaoui

27-Jul-07 2:57

tout a fait =) Big Grin | :-D

Re: How to egalise two strings

Rage27-Jul-07 3:01

Rage

27-Jul-07 3:01

Te laisse pas impressioner par Tox, il est dur, mais très très fort. Poke tongue | ;-P

Don't follow any man spiritually, don't do anything that will get you in sh*t if god is real - Bradml[^]

Re: How to egalise two strings

garfaoui27-Jul-07 3:09

garfaoui

27-Jul-07 3:09

Ne t´inquète pas!
En tout cas il m´a bien aidé!
C´est par rapport au repertoire de l´executable que tu as vu que j´étais au Portugal?

Re: How to egalise two strings

toxcct27-Jul-07 3:14

toxcct

27-Jul-07 3:14

non, par rapport a ton profil ^^

@Régis, merci pr la petite note d'humour... "il est tres tres fort", c'est a double tranchant ca Poke tongue | ;-P

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Re: How to egalise two strings

Rage27-Jul-07 3:21

Rage

27-Jul-07 3:21

Don't follow any man spiritually, don't do anything that will get you in sh*t if god is real - Bradml[^]

Re: How to egalise two strings

Rage27-Jul-07 3:20

Rage

27-Jul-07 3:20

Nope, c'est dans ta biographie (clique sur l'icone en forme de tete a cote de ton nom)

Don't follow any man spiritually, don't do anything that will get you in sh*t if god is real - Bradml[^]

Re: How to egalise two strings

garfaoui27-Jul-07 2:19

garfaoui

27-Jul-07 2:19

Shilpi Boosar wrote:
if(strcmp(s1,s2)==0)

lead to the following error: <;146 C:\Documents and Settings\garfaoui\Ambiente de trabalho\test\clippr\main.cpp no matching function for call to `strcmp(std::string&, std::string&)' >

Re: How to egalise two strings

ShilpiP27-Jul-07 2:51

ShilpiP

27-Jul-07 2:51

string s1 = "shilpi";
string s2 = "shilpi";

if(strcmp(s1.c_str(),s2.c_str())==0)
{
printf("Hi");
}

what i wanna say is this ,try it

Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

two dimensional array initialization

George_George26-Jul-07 23:35

George_George

26-Jul-07 23:35

Hello everyone,

I find to initialize two dimentional array in Visual Studio, I have to specify the number of elements. For example,

<br />
const char foo[][] = {"hello",  "world"}; // compile error<br />
const char goo[][64] = {"hello",  "world"}; // compile correct<br />

So, the best solution is to specify the number of elements of the 2nd dimension (inner dimension)?

thanks in advance,
George

Re: two dimensional array initialization [modified]

toxcct26-Jul-07 23:46

toxcct

26-Jul-07 23:46

the best ?

std::vector<std::vector<std::string> >

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