整数转成字符串

#include <stdlib.h>
#include <stdio.h>
int main(void)
{
    int number = 12345;
    char string[32];
    itoa(number, string, 10);
    printf("integer = %d string = %s\n", number, string);
    return 0;
}

void intToString(int num, char*s)
{
    int i = 0;
    while (num)
    {
        s[i] = num%10 + ‘0‘;
        num = num/10;
        i++;
    }
    s[i] = ‘\0‘;
    for (int j = 0, k = i-1; j < k; j++,k--)
    {
        char temp = s[j];
        s[j] = s[k];
        s[k] = temp;
    }
}

string intToString(int n)
{
    ostringstream ostr;
    ostr<<n;
    return ostr.str();
}

string intToString2(int n)
{
    string result = "";
    while (n)
    {
        char c = n%10 + ‘0‘;
        result = c+result;
        n = n/10;
    }
    return result;
}

string str = intToString(n);
char * s = const_cast<char*>(str.c_str());