Question

报告文件应包含以下内容： 1.单词数量 2.大写字母数 3.小写字母数 4.位数

我已成功阅读该文件并计算字母和数字，但我在将内容写入新文件时遇到问题，我们将不胜感激。

#include <stdio.h>
#include <ctype.h>
#define SIZE 40

int main(void)
{
char ch, filename[SIZE];
int digits = 0;
int upper = 0;
int lower = 0;
int entered = 0;
int words = 0;
unsigned long count = 0;
FILE *fp;
printf("Please enter the filename to read: ");
gets(filename);
// "r" reads the file fopen opens the file
if ((fp = fopen(filename, "r")) == NULL)
{
    printf("Cannot open the file, %s\n", filename);
}
else
{
    puts("Successfully opened, now reading.\n");

    while ((ch=getc(fp)) != EOF)
    {
       if (isalnum(ch))
       {
           if(!entered)
           {
               entered = 1;
               words++;
           }

       }

       else
       {
            if (entered)
            {
                entered = 0;
            }
       }

       if (isupper(ch))
           {
             upper++;
           }

       else if (islower(ch))
            {
                lower++;
            }
       else if (isdigit(ch))
       {
           digits++;
       }

    }

  }

  fclose(fp); //make sure to close the file if you open one

  char filename2 [SIZE];
  FILE *fp2;

fprintf(stdout, "Please enter the file name to write in: ");
gets(filename2);

if ((fp2 = fopen("filename2", "w")) == NULL)
{
    printf("Cannot create the file, %s\n", filename2);
}
else
{
    fprintf(fp2, "The file \"%s\" has %lu Words.\n", filename, words);
    fprintf(fp2, "The file \"%s\" has %lu Digits.\n", filename, digits);
    fprintf(fp2, "The file \"%s\" has %lu upper case letters.\n", filename, upper);
    fprintf(fp2, "The file \"%s\" has %lu lower case letters.\n", filename, lower);

}

fclose(fp2);


return 0;

}

Answer 1

而不是

if ((fp2 = fopen("filename2", "w")) == NULL)

写

if ((fp2 = fopen(filename2, "w")) == NULL)

然后，踢你自己。

编写一个程序，读取文本文件的内容，并将单词数，大写/小写字母和数字写入单独的文件

1 个答案: