求大佬，这个问题在哪儿？

#include<stdio.h>
#include<stdlib.h>
int main()
{
int ch;
FILE *fp;
char fname[50];
printf("Enter the name of the file:");
scanf("%s",fname);
fp=fopen(fname,"a");
if(fp == NULL)
{
printf("failed to open file. bye \n");
exit(1);
}
while((ch=getc(fp))!=EOF)
putchar(ch);
fclose(fp);
return 0;
}