运行程序时显示未响应~~求大神指教~~编译器是codeblocks
#include<stdio.h>
#include<stdlib.h>
#include<stdbool.h>
#include<string.h>
char *str_in(void);
void str_sort(const char *[],int);
void swap(void **p1,void **p2);
void str_out(char *[],int);
#define BUFFER_LEN 256
#define NUM_P 50
int main(void)
{
    char *pS[NUM_P];
    int count=0;
    printf("\nEnter successive lines,pressing Enter at the end of each line.\nJust press Enter to end.\n");
    for(count=0;count<NUM_P;count++)
     if((pS[count]=str_in())==NULL)
      break;
    str_sort(pS,count);
    str_out(pS,count);
    return 0;
}
char *str_in(void)
{
    char buffer[BUFFER_LEN];
    char *pString=NULL;
    if(gets(buffer)==NULL)
     {
         printf("\nError reading string.\n");
         exit(1);
     }
     if(buffer[0]=='\0')
      return false;
     *pString=(char*)malloc(strlen(buffer)+1);
     if(*pString==NULL)
     {
         printf("\nOut of memory.");
         exit(1);
     }
     return strcpy(pString,buffer);
}
void str_sort(const char *p[],int n)
{
    char *pTemp=NULL;
    bool sorted=false;
    while(!sorted)
    {
        sorted=true;
         for(int i=0;i<n-1;i++)
         if(strcmp(p[i],p[i+1])>0)
         {
             sorted=false;
             swap(&p[i],&p[i+1]);
         }
    }
}
void swap(void **p1,void **p2)
{
    void *pt=*p1;
    *p1=*p2;
    *p2=pt;
}
void str_out(char *p[],int n)
{
    printf("\nYour input sorted in order is:\n\n");
    for(int i=0;i<n;i++)
    {
        printf("%s\n",*p);
        free(*p);
        *p++=NULL;
    }
    return;
}