Programming

write(1, &readbuffer, sizeof(readbuffer) /sizeof(int));

int main()
{
    int s=-5;
    int g=6;
    static char d[10];
    static char h[10];
    itoa(s,d);
    itoa(g,h);
    write(1, d, sizeof(d));
    write(1, h, sizeof(h));
}

#include <stdio.h>
#define itoa(x,s) sprintf(s,"%d",x)

    write(1, d, sizeof(d));
    write(1,"\n",1);
    write(1, h, sizeof(h));
    write(1,"\n",1);

void reverse(char s[])
{
      int c, i, j;
      for (i=0, j=strlen(s)-1; i<j; i++, j--)
      {
            c=s[i];
            s[i]=s[j];
            s[j]=c;
      }
}

void itoa(int n, char s[])
{
     int i, sign;
     if ((sign=n)<0)
            n=-n;
     i=0;
     do 
     {
             s[i++]=n%10+'0';
     }
     while ((n/=10)>0);
     if (sign<0)
           s[i++]='-';
     s[i]='\0';
     reverse(s);
}

gcc -std=99 -Werror -Wall -pedantic -Wextra -errors my_file.c -o executable

/usr/bin/ld: warning: cannot find entry symbol rrors; defaulting to 0000000008048500