C語言實現Split函數

借助C語言的動態內存分配，實現類似VB中Split函數的效果。

函數介紹:

功能：按一個字符來拆分字符串

參數 src:要拆分的字符串
參數 delim:按照這個字符來拆分字符串
參數 istr:借助這個結構體來返回給調用者拆分後的字符串數組和字符串的個數
返回拆分是否成功
 

#include 
#include 
#include 

typedef struct {
    char **str;     //the PChar of string array
    size_t num;     //the number of string
}IString;


/** Split string by a char
 *
 * param  src:the string that you want to split
 * param  delim:split string by this char
 * param  istr:a srtuct to save string-array's PChar and string's amount.
 * 
eturn  whether or not to split string successfully
 *
 */
int Split(char *src, char *delim, IString* istr)//split buf
{
    int i;
    char *str = NULL, *p = NULL;
    char **data;

    (*istr).num = 1;
	str = (char*)calloc(strlen(src)+1,sizeof(char));
	if (str == NULL) return 0;
    data = (char**)calloc(1,sizeof(char *));
    if (data == NULL) return 0;
    str = src;

	data[0] = strtok(str, delim);
	for(i=1; p = strtok(NULL, delim); i++)
    {
        (*istr).num++;
        data = (char**)realloc(data,(i+1)*sizeof(char *));
        if (data == NULL) return 0;
        data[i] = p;
    }
    (*istr).str = data;

    free(str);
    //free(data);       //You must to free it in the caller of function
    str = p = NULL;

    return 1;
}

int main()
{
    int i;
    char s[]=data0|data1|data2|data3|data4|data5|data6|data7|data8;
    IString istr;

    if (  Split(s,|,&istr) )
    {
        for (i=0;i




運行結果：
data0

data1

data2

data3

data4

data5

data6

data7

data8