A simple problem of storing ...

[Maggi Iggam]

I know , it may be childish question but here it goes :-
I am trying to store value of int variable along with space .
Ex - if a is an int & b is an string , then i am trying to store value of a into b along with a "\n" , ie a new line.
so if a=5 then i want b to be equal to 5\n , ie 5 & then a blank line .
Thanks for help in advanced !

[ResidentBiscuit]

Well, there is a function itoa() for this purpose, but its not ANSI standard, and not always supported by compilers. So, you'll likely want to look into stringstream

[Jessy V]

Well, that's quite simple and does not need any non-standard functions.
consider this program (C code) :

#include <stdlib.h>
#include <stdio.h>

int main(int argc,char** argv)
{
printf("Please enter a number : ");
char vsString[255]; // A typed number is not very long, but one could enter anything just for fun (i'm not kidding)
int viNumber = 0; // Always give a default value
scanf("%i",&viNumber);
/*
And here is the magic function. It works like printf, but outputs to a string instead of the console. This string is given as the first argument
See : http://www.cplusplus.com/reference/clibrary/cstdio/sprintf/
*/
sprintf(vsString,"%i\n",viNumber);
// The result is now stored in vsString. Let's show it :
printf("%s",vsString);
return EXIT_SUCCESS;
};

As you can see, we just used standard headers, and it works in C !
If you want to use it in C++, you should use the C++ names for the headers : cstdio and cstdlib.
Some compilers now provide safe versions of these functions. I let you use them, as each compiler has it's own set of safe functions, I can't tell you what to use without to know about your compiler (name and version).
Also note that stdlib.h is just used for the return value macro.

I hope that helps you ;)

Jessy V

[ResidentBiscuit]

I would still say stringstream is a safer and simpler way of doing it.

[Maggi Iggam]

Thankyou ResidentBiscuit & especially Jessy V. , it really works , but i am looking this code for online c++ competition so i myself don't know the compiler name & version (although i know its gnu cpp) . Therefore i am looking for the method that takes the least time and memory .
So if you could provide me a better solution where i do not need to declare any extra header file , it would really really help me.
I have its java version , for showing the example again.
a=a+"\n"; //a is a string
Thus , i think there must be something really simple for this .
Thankyou once again !

[ResidentBiscuit]

http://www.cplusplus.com/reference/iostream/stringstream/

[Maggi Iggam]

Okay , thankyou , i have got it !