吴裕雄--天生自然C语言开发：文件读写

#include <stdio.h>

int main()

{

   FILE *fp = NULL;

   fp = fopen("/tmp/test.txt", "w+");

   fprintf(fp, "This is testing for fprintf...\n");

   fputs("This is testing for fputs...\n", fp);

   fclose(fp);

}

#include <stdio.h>

int main()

{

   FILE *fp = NULL;

   char buff[];

   fp = fopen("/tmp/test.txt", "r");

   fscanf(fp, "%s", buff);

   printf("1: %s\n", buff );

   fgets(buff, , (FILE*)fp);

   printf("2: %s\n", buff );

   fgets(buff, , (FILE*)fp);

   printf("3: %s\n", buff );

   fclose(fp);

}

size_t fread(void *ptr, size_t size_of_elements,

             size_t number_of_elements, FILE *a_file);

size_t fwrite(const void *ptr, size_t size_of_elements,

             size_t number_of_elements, FILE *a_file);