c语言类笔试题

应届毕业生求职网整理了c语言类笔试题，供参考：

 c语言

#include "stdio.h"

main()

{

        FILE *fp;

        char ch,filename[10];

        scanf("%s",filename);

        if((fp=fopen(filename,"w")==NULL)

        {

printf("cann't open file\n");

exit(0);

  }

  ch=getchar();

  while(ch!='#')

  {

       fputc(ch,fp);

       putchar(ch);

       ch=getchar();

  }

  fclose(fp);

}