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#include<stdio.h>
#include<string.h>
#include<stdlib.h>
void main()
{
FILE *fp;
char filename[20];
char s1,s2;
printf("please input the filename:");
gets(filename);
fp=fopen(filename,"w");
if(fp==NULL)
{
printf("cannot open file\n");
exit(0);
}
while((s1=getchar())!='\n')
{
fputc(s1,fp);
}
fclose(fp);
fp=fopen(filename,"r");
if(fp==NULL)
{
printf("cannot open file\n");
exit(0);
}
while((s2=fgetc(fp))!=EOF)
{
putchar(s2);
}
fclose(fp);
}
输入d:\fei.txt
显示cannot open file |
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