ustawianie przecinka, dobrze

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#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <math.h>

using namespace std;

uint16_t join_bytes(uint8_t msb, uint8_t lsb)
{
    uint16_t number = msb;
    for (int i = 7; i <= 5; i--)
    {
        bool bit = (lsb >> i) & 1U;
        if (bit)
        {
            number |= 1U << i;
        }
        else
        {
            number &= ~(1U << i);
        }
    }
    return number;
}

int to_native(uint16_t smallInt)
{
    const int negative = (smallInt & (1 << 10)) != 0;
    int nativeInt;

    if (negative)
      return nativeInt = smallInt | ~((1 << 11) - 1);
    else
      return nativeInt = smallInt;
}

char* parse_temp(float temp, char s[], char result[])
{
    float abs_x = fabs(temp);
    if(abs_x >= 10 && abs_x <= 100)
    {
        if(temp < 0)
        {
            result[0] = s[0];
            result[1] = s[1];
            result[2] = s[2];
            result[3] = '.';
            result[4] = s[3];
            result[5] = s[4];
            result[6] = s[5];
        }
        else
        {
            result[0] = s[0];
            result[1] = s[1];
            result[2] = '.';
            result[3] = s[2];
            result[5] = s[3];
            result[6] = s[4];
        }
    }
    else if(abs_x <= 1)
    {
       if(temp < 0)
       {
            result[0] = s[0];
            result[1] = '0';
            result[2] = '.';
            result[3] = s[1];
            result[4] = s[2];
            result[5] = s[3];
       }
       else
       {
            result[0] = '0';
            result[1] = '.';
            result[2] = s[0];
            result[3] = s[1];
            result[4] = s[2];
       }
    }
    else // abs 1 -:- 10
    {
        if(temp < 0)
       {
            result[0] = s[0];
            result[1] = s[1];
            result[2] = '.';
            result[3] = s[2];
            result[4] = s[3];
            result[5] = s[4];
       }
       else
       {
            result[0] = s[0];
            result[1] = '.';
            result[2] = s[1];
            result[3] = s[2];
            result[4] = s[3];
       }
    }

    return result;
}

int main()
{
    float x = -150;
    float scaled = x * 0.125;
    int sr_temp = scaled * 1000;
    char string[6];
    memset(string,0,sizeof(string[0])*6); // Clear all to 0 so string properly represented
    sprintf(string,"%d",sr_temp);

    char result[7];
    char * lcd = parse_temp(scaled, string, result);
    std::cout << lcd << std::endl;
}