求助，段错误怎么办

2012-04-04 11:32:43 234 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

【VeriStand】从零构建HIL测试平台：核心概念、硬件选型与实战配置指南本文详细介绍了如何从零构建HIL测试平台，涵盖核心概念、硬件选型与实战配置指南。重点解析了VeriStand生态系统的优势，包括开箱即用特性、与LabVIEW的黄金搭档配合及Python支持。通过实战案例和硬件选型建议，帮助工程师高效搭建可靠的HIL测试平台，提升测试效率与安全性。阅读详情

#include "std.h"

#include <stdio.h>

#include <stdlib.h>

#include <string.h>



int len = 0;



struct node

{  

  char *word;

  int count;

  struct node *next;   

}*head,*p,*q;



struct node* printf_sort(struct node *head)

{

  struct node *p1,*p2,*ptemp,*pfinished = NULL;

for (p1 = head; p1->next != pfinished;)

{

  for (p2 = p1; p2->next != pfinished;)

{

if (p2->count < p2->next->count)

  {

if (p2 == p1)

{

p1 = p2->next;

p2->next = p1->next;

p1->next = p2;

ptemp = p1;

}

else

{

ptemp->next = p2->next;

ptemp = p2->next;

p2->next = ptemp->next;

ptemp->next = p2;

}

}

else

{

ptemp = p2;

p2=p2->next;

}

}

pfinished = p2;

}

}

int main(int argc, char *argv[])

{

  int ndisp = 0;

  struct timeval starttime, endtime, durtime;

  int i = 0;



  /* step0: get cmd parameter and check it */



  if (argc < 2){

  printf("USAGE: wordcount <filename> [Top # of results to display]\n");

  exit(0);

  }

  char *filename = *(argv + 1);

    

  /* step1: prepare work (e.g. open file, load file to memory ...) */

    

  FILE *file;

  if ((file = fopen(filename, "r")) == NULL){

  printf("cannot open this file\n");

  exit(0);

  }

  printf("wordcount: Running...\n");

  gettimeofday(&starttime, 0);



  /* step2: do word count */



  char ch;

  head = NULL;

  while ((ch = fgetc(file)) != EOF)

  {

  while (ch == ' ')

  ch = fgetc(file);

  if (ch <= 'Z')

  ch += 32;

  i = 0;

  q = (struct node *) malloc(sizeof(struct node));

  char temp[20];  

  while (ch = fgetc(file) != ' ')   

  {

  temp[i] = ch;

  i++;

  }

  int same = 0;

  for (p = head; p != NULL; p = p->next)

  {

  if (strcmp(temp, p->word) == 0)

  {

  p->count++;

  same = 1;

  }

  }

  if (same == 0)

  {

  strcpy(q->word, temp);

  p->next = q;

  }

  }

  gettimeofday(&endtime, 0);

  GET_TIME(starttime, endtime, durtime);

  printf("wordcount: completed %ld.%ld(s)\n", durtime.tv_sec, durtime.tv_usec);





  printf("wordsort: running ...\n");

  gettimeofday(&starttime, 0);	



  /* step3: sort the results */



  printf_sort(head);

  gettimeofday(&endtime, 0);

  GET_TIME(starttime, endtime, durtime);

  printf("wordsort: completed %ld.%ld(s)\n", durtime.tv_sec, durtime.tv_usec);





  /* step4: print results */

  ndisp = head->count;

  printf("\nwordcount: results (TOP %d from %d):\n", ndisp, len);

  p = head;

  if (head != NULL)

  {

  do

  {

  printf("%s - %d\n", p->word, p->count);

  p = p->next;

  }while (p != NULL);

  }

  /* step5: destroy work (e.g. free memory, close file ...) */

  fclose(file);

  free(head);

  return 0;

}