From: "Lev Assinovsky" <LAssinovsky@algorithm.aelita.com>
To: "learning c++" <learning_c@hotmail.com>, <gcc-help@gcc.gnu.org>
Subject: RE: error: no match for `std::string& != long int' operator
Date: Wed, 01 Sep 2004 10:38:00 -0000 [thread overview]
Message-ID: <A791774B798C024D98F7E10961E99E71896CF6@SPBMX0.edm.com> (raw)
Sorry, but you code is wrong.
string is a class name and s1 is an object.
You can't apply != NULL or ++ unless
these operators are declared by basic_string.
As far as I know basic_string doesn't have those operators.
-----Original Message-----
From: gcc-help-owner@gcc.gnu.org [mailto:gcc-help-owner@gcc.gnu.org]On
Behalf Of learning c++
Sent: Wednesday, September 01, 2004 2:23 PM
To: gcc-help@gcc.gnu.org
Subject: error: no match for `std::string& != long int' operator
Hi,
I have a short code hope to print the character of a string one by one. but
there are some errors.
if I declare srting s1, is s1 a pointer? are there some difference between C
and C++?
#include <iostream>
#include <string>
using namespace std;
int main(){
string s1("0123456789abcdefghijklmnopqrstuvwxyz");
for(s1; s1!=NULL; ++s1)
cout <<*s1<<" " <<int(*s1)<<" ";
return 0;
}
printc.cpp: In function `int main()':
printc.cpp:9: error: no match for `std::string& != long int' operator
printc.cpp:9: error: no match for `++ std::string&' operator
printc.cpp:10: error: no match for `* std::string&' operator
printc.cpp:10: error: no match for `* std::string&' operator
printc.cpp:9: warning: statement with no effect
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next reply other threads:[~2004-09-01 10:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-01 10:38 Lev Assinovsky [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-09-01 10:22 learning c++
2004-09-01 11:07 ` Arno Wilhelm
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