自己编的---学习C语言文件的一些小程序

#include<stdlib.h>
#include<stdio.h>
#define LEN 1000
int main()
{
    FILE *psourcef,*pdestf;
    char destfname[20],storage[LEN];
    int i=0,cout=0;
    if((psourcef=fopen("E:\\a.txt","rt"))==NULL)
    {
       printf("打开出错！\n");
       //getch();
       exit(1);
                                       }
    printf("请输入目标文件名\n");
    scanf("%s",destfname);                                   
    if((pdestf=fopen(destfname,"wt"))==NULL)
    {
       printf("打开出错！\n");
       //getch();
       exit(1);
                                       }
                                       
    for(i;i<LEN-1&&(!feof(psourcef));i++)
    {
       storage[i]=fgetc(psourcef);
       cout++;
                                       }
    //*fputs("原来的数据：\n",pdestf);
    for(i=0;i<cout-1;i++)

    {
       fputc(storage[i],pdestf);
                          }
                          
    //fputs("\n*****************************************************************\n转换后的数据：\n",pdestf);*/
    /*for(i=cout-2;i>-1;i--)
    {
       fputc(storage[i],pdestf);
                          }*/
                          
    fclose(psourcef);
    fclose(pdestf);
    return 0;
    
    }








----------------------------------------------------------------------
#include<stdlib.h>
#include<stdio.h>
#define LEN 1000
int main()
{
    FILE *psourcef,*pdestf;