写的split带改进

#include <stdio.h>
#include <ctype.h>
char** split(int* out,char in[])
{
    char *p1,*p2;
    p1 = p2 = in;
    int count=1;
    while((*p2)!='\0')
    {
        if((*p2)==',')
        {
            count++;
        }
        p2++;
    }
    *out=count;
    char** result=(char**)malloc(count*sizeof(char *));
   
    count=0;
    for(p2=p1;(*p2)!='\0',(*p1)!='\0';p2++)
    {
        if((*p2)==',')
        {
            int r=(p2-p1);
            if(r>0)
            {
                char* pp=(char*)malloc((r+1)*sizeof(char));
                strncpy(pp,p1,r);
                *(pp+r+1)='\0';
                *(result+count)=pp;
                count++;
                p1=p2+1;
            }
           
        }
    }
   
   
    return result;
   
}


int main()
{

    char b[]="ab";
    int out=0;
    char** r=split(&out,b);
    printf("%s\n",*r);
    //printf("%s\n",*(r+1));
    printf("%d\n",out);
    return 0;
}