Converting Numbers to Strings

[josha13]

I am very new to C++ and I am trying to figure out how to convert a number to a string (even in the simplest case such as

#include <iostream>
#include <sstream>
using namespace std;
 
int main () {
  int a;
  a = 1;
  b = 2;
 
  string c;
  c = ?????????????????????
    cout << c;
 
 
  return 0;
}
 

What do I put where the question marks are??? How would I convert a and b into strings and then concatenate them??

Thanks for your help

[sicarie]

Have a look at this.

(And please use code tags! Thanks!)

[archonmagnus]

Since it looks like you are dealing with integers, you might want to investigate the atoi function as well.

C++ "atoi" Reference Page

[weaknessforcats]

atoi is a deprecated function in C++.

You should use a stringstream:

int val = 123;
string str;
stringstream ss;
ss << val;
ss >> str;
 
cout << str << endl;
 

Here the integer is inserted in the stringstream as the characters 1 2 3. Then the characters are extracted from the stringstream into your string object.

[r035198x]

atoi is a deprecated function in C++.

You should use a stringstream:

int val = 123;
string str;
stringstream ss;
ss << val;
ss >> str;
 
cout << str << endl;
 

Here the integer is inserted in the stringstream as the characters 1 2 3. Then the characters are extracted from the stringstream into your string object.

You'll notice that the OP had actually included sstream!