cout << char(x)

#include <iostream>
using namespace std;

int main(void)
{
float number = -12.3222;
cout << number;
system("pause");
return 0;
}

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
 
#define SIZE 100
 
char* rtrim(char*, char);
 
int main()
{
    char buf[SIZE];
 
    double value = 12640320.250000;
 
    snprintf(buf, SIZE, "%f", value);
 
    puts(rtrim(buf, '0'));
    
    exit(0);
}
 
char* rtrim(char* buf, char c)
{
    /* Null buf will cause segmentation fault */
 
    char* pbuf = buf + strlen(buf) - 1;
 
    while(pbuf >= buf && *pbuf == c)
        --pbuf;
 
    pbuf[1] = '\0';
 
    return buf;
}