c - 如何找到字符串中每个单词的长度？

我编写了一个包含一个句子并输出一行中的每个单词的代码。但是我也想在每个单词旁边写上它的大小。

输入：

Hi my name is

电流输出：

Hi
my
name
is

所需的输出：

Hi(2)
my(2)
name(4)
is(2)

我当前的代码：

#include <stdio.h>

#define MAX 100

int main(void) {

    int c = 0;
    size_t n = 0;

    printf("\n Enter a sentence.\n\n input: ");

    /* read up to 100 characters from stdin, print each word on a line */
    while (n < MAX && (c = getchar()) != EOF && c != '\n')
    {
        if (c == ' ')
            printf("\n");
        else
            printf("%c", c);
        n++;
    }
    printf("\n");

    if (n == MAX) /* read and discard remaining chars in stdin */
        while ((c = getchar()) != '\n' && c != EOF);

    return 0;
}

我怎样才能做到这一点？

最佳答案

为了完整起见，采用另一种方法在一个调用中读取整个输入，然后将其标记化：

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#define MAX (100)

int main(void)
{
  int result = EXIT_SUCCESS; /* Be optimistic. */
  char s[MAX +1];

  printf("\n Enter a sentence.\n\n input: ");

  /* read up to 100 characters from stdin, print each word on a line */

  if (NULL == fgets(s, sizeof s, stdin))
  {
    if (ferror(stdin))
    {
      perror("fgets() failed");
      result = EXIT_FAILURE;
    }
  }
  else
  {
    s[strcspn(s, "\r\n")] = '\0'; /* chop off carriage return, line feed, if any */

    for (char * pc = strtok(s, " "); NULL != pc; pc = strtok(NULL, " "))
    {
      printf("%s (%zu)\n", pc, strlen(pc));
    }
  }

  return result;
}

由于从未明确使用读取缓冲区，因此以下变体也是可能的：

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#define MAX (100)

int main(void)
{
  int result = EXIT_SUCCESS; /* Be optimistic. */

  printf("\n Enter a sentence.\n\n input: ");

  {
  /* read up to 100 characters from stdin, print each word on a line */
    char * pc = fgets((char[MAX+1]), MAX+1, stdin);
    if (NULL == pc)
    {
      if (ferror(stdin))
      {
        perror("fgets() failed");
        result = EXIT_FAILURE;
      }
    }
    else
    {
      pc[strcspn(pc, "\r\n")] = '\0'; /* chop off carriage return, line feed, if any */

      for (pc = strtok(pc, " "); NULL != pc; pc = strtok(NULL, " "))
      {
        printf("%s (%zu)\n", pc, strlen(pc));
      }
    }
  }

  return result;
}