myint.c

来自「压缩包里面的都是精致的基本C语言小程序」· C语言 代码 · 共 77 行

#include <stdio.h>
#include <stdlib.h>
#include "mystdlib.h"
#include "error.h"
#include "myint.h"

static int maxSize = 1000;

struct myint
{
  int i;
};

myint newMyint (int i)
{
  myint mi = checkedMalloc (sizeof (*mi));
  mi->i = i;
  return mi;
}

str intToString2 (int n)
{
  char a[100];
  int temp[100];
  int size = -1;
  
  char sign = '+';

  if (n < 0)
    sign = '-';

  int absn = abs (n);
  int mod = 0;

  while (absn > 9)
  {
    mod = absn % 10;
    absn = absn / 10;
    temp[++size] = mod;
  }
  
  if (absn>=0)
    temp [++size] = absn;
  
  //for (int t=0; t<=size; t++)
  //printf ("size=%d, %d\n", size, temp[t]);

  if ('-'==sign)
  {
    for (int j=size; j>=0; j--)
      a[size-j+1] = temp[j] + 48;
    a[0] = '-';
    a[size+2] = '\0';
  }
  else
  {
    for (int j=size; j>=0; j--)
      a[size-j] = temp[j] + 48;
    a[size+1] = '\0';
  }
  
  return newStr (a);
}

str intToString (long i)
{
  char *temp;
  temp = checkedMalloc (maxSize * sizeof (char));
  sprintf (temp, "%ld", i);
  if (! (strValid (temp, maxSize)))
    exception ("space not enought: myint.c\n");
  
  str sss = newStr (temp);
  checkedFree (temp);
  return sss;
}