string name = "blabla"
unsigned int month = 12;
unsigned int day = 18;
unsigned int year = 2004;
string filename = blabla + "\\" + day + "/" + month + "/" +
"/" + year + ".trc";
concatenating a c++ string
Author
Hi to everyone.
How can I concatenate a string in C++ mixing with some unsigned integers as well?
What I want to do is:
string filename = blabla + "\\" + string(day) + "/" + string(month) + "/" + "/" + string(year) + ".trc";
Does that work?
Does that work?
Author
No, it gives an error of:
error C2440: ''type cast'' : cannot convert from ''unsigned short'' to ''class std::basic_string,class st
d::allocator >''
No constructor could take the source type, or constructor overload resolution was ambiguous
(using VC++ 6.0)
error C2440: ''type cast'' : cannot convert from ''unsigned short'' to ''class std::basic_string,class st
d::allocator >''
No constructor could take the source type, or constructor overload resolution was ambiguous
(using VC++ 6.0)
Couldn''t you overload operator + for Strings and ints, doubles, etc, returning a reference to a String?
string name = "blabla";unsigned int month = 12;unsigned int day = 18;unsigned int year = 2004;stringstream ss; // Declared in <sstream>ss << blabla << "\\" << day << "/" << month << "/" << "/" << year << ".trc";string s = ss.str(); // Extract string Stringstreams can also be used to read from, just like any other input streams (cin, file streams ...).
[edited by - Miserable on May 18, 2004 10:47:30 AM]
gahh...
It''s not String (a Java-ism?) it''s std::string.
You can use:
int v;
stringstream ss;
ss << "Hello this is an int: " << v << ....
and then convert the string stream to a string.
You can use wsprintf to format a char*.
You can use itoa().
Regards,
Jeff
[ CodeDread ]
It''s not String (a Java-ism?) it''s std::string.
You can use:
int v;
stringstream ss;
ss << "Hello this is an int: " << v << ....
and then convert the string stream to a string.
You can use wsprintf to format a char*.
You can use itoa().
Regards,
Jeff
[ CodeDread ]
Author
Yep, the stringstream thingy worked like a charm 
I''ve never heard of them, thanks guys! Just when I was ready to use sprintf. It''s not that I don''t like C but I''m trying to learn C++ and stick with it, don''t mix code. Thank you all for your time!
I''ve never heard of them, thanks guys! Just when I was ready to use sprintf. It''s not that I don''t like C but I''m trying to learn C++ and stick with it, don''t mix code. Thank you all for your time!
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