C语言中内存操作函数

以空格分隔字符窜#include "stdio.h"

#include "stdlib.h"

#include "memory.h"

char **splitstr(const char *src, char ch)

{

char **ppret=NULL;

char *p;

int count(0),i=0,j=0,k=0;

if(src==NULL) return NULL;

for(int c=0;src[c]!='\0';c++)

{

if(src[c]==ch)

count++;

}

count=count+1;

ppret=(char **)malloc(sizeof(char *)*count+1);

while(true)

{

if(src[i]==ch||src[i]=='\0')

{

p=(char *)malloc(sizeof(char)*k+1);

memcpy(p,&src[i-k],k);

p[k]='\0';

ppret[j++]=p;

k=0;

if(src[i]=='\0')

break;

}

else

k++;

i++;

}

ppret[j]=NULL;

return ppret;

}

void main()

{

const char *src="my name is majupeng";

char **ss=NULL,**temp=NULL;

ss=splitstr(src,' ');

temp=ss;

while((*temp)!=NULL)

printf("%s\n",*(temp++));

temp=ss;

while((*temp)!=NULL)

free(*(temp++));

}