Question

How to convert int to char array in C++

Answer 1

#include <iostream>

int main() {
    int n = 1234;

    std::string s = std::to_string(n);
    char const *arr = s.c_str();
    
    for (int i = 0; arr[i]; i++)
        std::cout << arr[i] << " ";
 
    return 0;
}
 
 
 
 
/*
run:
 
1 2 3 4 
 
*/

 

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Answer 2

#include <iostream>
#include <sstream>

int main() {
    int n = 1234;

    std::stringstream s;
    s << n;

    char const *arr = s.str().c_str();
    
    for (int i = 0; arr[i]; i++)
        std::cout << arr[i] << " ";
 
    return 0;
}
 
 
 
 
/*
run:
 
1 2 3 4 
 
*/

 

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Answer 3

#include <iostream>
#include <charconv>

int main() {
    int n = 1234;
    char arr[10] = "";

    std::to_chars(arr, arr + 10, n);
    
    for (int i = 0; arr[i]; i++)
        std::cout << arr[i] << " ";
 
    return 0;
}
 
 
 
 
/*
run:
 
1 2 3 4 
 
*/

 

70+ SQL courses for beginners and professionals