大家好，本人刚学了点文件指针，现有个问题： 　　　本意是：我在D盘有个文件data.txt，其中有这样的字符：I like C.那现我想通过写一段程序在D盘建一个文件：data2.txt，并把　I like C.复制过来。程序如下，但运行后出现无数个y,且头上还有两点，请大伙帮个忙，给个解释，谢谢！

main() { FILE *f,*f2; char c; f=fopen("d:\\data.txt","r"); f2=fopen("d:\\data2.txt","w"); if(f==NULL||f2==NULL) { printf("This file doesn't exist,please creat it."); exit(1); } c=fgetc(f); while(!feof(f)) { fputc(c,f2); c=fgetc(f); } while(!feof(f2)) putchar(fgetc(f2)); fclose(f); fclose(f2); getch(); }

谢谢，有点明白了，我现自己改了下，谢谢各位的帮忙！ #include<stdio.h> main() { FILE *f,*f2; f=fopen("d:\\data.txt","r"); f2=fopen("d:\\data2.txt","w+"); if(f==NULL||f2==NULL) { printf("This file doesn't exist,please creat it."); exit(1); }

while(fgetc(f)!=EOF) { fseek(f,-1L,1);fputc(fgetc(f),f2); } /*fclose(f2); f2=fopen("d:\\data2.txt","r"); 这两句的作用与rewind(f2)的作用相同，仅当"w+"时相同的。*/ rewind(f2); while(fgetc(f2)!=EOF) {fseek(f2,-1L,1);putchar(fgetc(f2)); } fclose(f); fclose(f2); getch(); }

[此贴子已经被作者于2005-2-25 11:50:44编辑过]