Easiest way to convert int to string in C

0 votes

In C++, what is the simplest way to convert an int to an equivalent string? 

I'm aware of two approaches. 

Is there any other option?

(1)

int a = 10;
char *intStr = itoa(a);
string str = string(intStr);

(2)

int a = 10;
stringstream ss;
ss << a;
string str = ss.str();

Jun 15, 2022 in C++ by Nicholas
• 7,760 points
1,099 views

1 answer to this question.

0 votes

std::stoi (and variations for each numeric type) and std::to string, the C++11 equivalents of atoi and itoa, but stated in terms of std::string, are introduced.

#include <string> 

std::string s = std::to_string(42);

As a result, this is the quickest route I can think of. 

You may even use the auto keyword to avoid identifying the type.

auto s = std::to_string(42);
answered Jun 15, 2022 by Damon
• 4,960 points

Related Questions In C++

0 votes
1 answer

Are virtual functions the only way to achieve Runtime Polymorphism in C++?

fprintf is a polymorphism function in the C programming language. It can print to a file, stdout, a printer, a socket, or whatever else the system can represent as a stream if you supply it different handles. FILE* file = fopen("output.txt", "w"); ...READ MORE

answered Jun 21, 2022 in C++ by Damon
• 4,960 points
484 views
0 votes
1 answer

What is the best way to use a HashMap in C++?

The ordered and unordered map containers (std::map and std::unordered map) are included in the standard library.  The items in an ordered map are sorted by key, and insert and access are in O (log n).  For ordered maps, the standard library often use red black trees.  However, this is only an implementation detail.  Insert and access are in O in an unordered map (1).  It is simply another term for a hashtable. An illustration using (ordered) std::map: #include <map> #include <iostream> #include <cassert> int main(int argc, char ...READ MORE

answered Jun 10, 2022 in C++ by Damon
• 4,960 points
847 views
0 votes
1 answer

Is there an easy way to make a min heap in C++?

Use make heap() and its buddies from algorithm>, or priority queue from queue>.  Make heap and friends are used by priority queue. #include <queue> // functional,iostream,ctime,cstdlib using namespace std; int main(int ...READ MORE

answered Jun 27, 2022 in C++ by Damon
• 4,960 points
1,036 views
0 votes
0 answers

C++ convert from 1 char to string?

I simply need to cast one character to string.  The inverse method is as easy as str[0]. The following suggestions did not work for me: char c = 34; string(1,c); //this doesn't work, the ...READ MORE

Jun 29, 2022 in C++ by Damon
• 4,960 points
1,101 views
0 votes
1 answer

Easiest way to convert int to string in C++

The C++11 version has introduced the std::stoi ...READ MORE

answered Feb 10, 2022 in Others by Rahul
• 9,680 points
534 views
0 votes
1 answer

How to convert a Unicode string to string

It can be done in the following ...READ MORE

answered Oct 16, 2018 in Python by SDeb
• 13,300 points
1,258 views
0 votes
1 answer
0 votes
1 answer

How can I convert a std::string to int?

There are some new convert methods in C++ that convert std::string to a numeric type. As an alternative to str.c str() atoi(str.c str()) atoi(str.c str() you can make use of std::stoi std::stoi ...READ MORE

answered Jun 1, 2022 in C++ by Damon
• 4,960 points
704 views
0 votes
1 answer

Easiest way to convert int to string in C++

C++ adds std::stoi (and variants for each numeric type) and std::to string, which are the C equivalents of atoi and itoa but expressed in terms of std::string #include <string> std::string s = std::to_string(42); Is therefore ...READ MORE

answered Jun 1, 2022 in C++ by Damon
• 4,960 points
1,407 views
0 votes
1 answer

How to convert string to char array in C++?

Simplest way I can think of doing ...READ MORE

answered Jun 20, 2022 in C++ by Damon
• 4,960 points
5,631 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP