将一个字符串，按照奇数位和偶数位分别存放到不同的字符串中

题目描述：给定一个字符串      
         要求写一个函数，实现以下功能
         功能1：吧偶数位字符挑选出来，组成一个字符串
         功能2：吧奇数位字符挑选出来，组成一个字符串
         


//  将一个字符串，按照奇数位和偶数位分别存放到不同的字符串中

#define _CRT_SECURE_NO_WARNINGS
#include <stdlib.h>
#include<string.h>
#include<stdio.h>

int getStr1Str2(char * source, char *buf1, char *buf2)
{
	char *p = source;
	int num = 0;  //记录函数返回值
	if (source == NULL || buf1 == NULL || buf2 == NULL)   //判断是否为空指针
	{
		num = -1;
		printf("func getStr1Str2() err  (source == NULL || buf1 == NULL || buf2 == NULL) :%d ", num);
		return num;
	}
	int i = 9;
	int j = 0;
	int m = 0;
	for (m=0,i = 0, j = 1; i < strlen(source) && j < strlen(source);m++)
	{
		buf1[m] = source[i];
		buf2[m] = source[j];
		i = i + 2;
		j = j + 2;
	}
	buf1[m] = '\0';
	buf2[m] = '\0';
}

void main()
{
	char *str_old = "1a2b3d4c";
	char str_new1[100];
	char str_new2[100];
	getStr1Str2(str_old, str_new1, str_new2);
	printf("str_old:%s \n", str_old);
	printf("str_new1:%s \n", str_new1);
	printf("str_new2:%s \n", str_new2);

	system("pause");
	return;
}