c - 将文本添加到行尾

Question

我正在处理一个文件。我想取每一行并在空格后分割。例如，如果 line1 有：今天是星期一我想要今天，是，星期一分开，以便处理它们

到目前为止，这是我的代码：

FILE *file = fopen ( "file1", "r" );

            if ((file != NULL ))
            {
                char line [ 128 ]; 
                while( ( fgets ( line, sizeof line, file ) != NULL ))
                {
                //tokenize the line based on space

                ??

                }
how to add text at the end of the line? i mean i have **today is monday** and i want to add for example **Yupppy** at the end of today is monday line.

            fclose ( file );

            }

Answer 1

要标记字符串，您可以使用strtok() 检查我发布的链接中的示例，只需将分隔符更改为空格：

（链接示例中的代码）

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




int main ()
{
  char str[] ="- This, a sample string.";
  char * pch;
  printf ("Splitting string \"%s\" into tokens:\n",str);
  pch = strtok (str," ");
  while (pch != NULL)
  {
    printf ("%s\n",pch);
    pch = strtok (NULL, " ");
  }
  return 0;
}