c语言实现文件拷贝命令

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int main(int argc, char* argv[])
{
FILE *fpread = NULL;
FILE *fpwrite = NULL;
int ch = 0;
if (argc != 3)
{
printf("请输入 cp 被拷贝的文件名 拷贝后的文件名\n");
//getchar();
exit(EXIT_FAILURE);
}
fpread = fopen(argv[1], "r");
if (fpread == NULL)
{
perror("opne file error for read");
exit(EXIT_FAILURE);
}
fpwrite = fopen(argv[2], "w");
if (fpwrite == NULL)
{
fclose(fpread);
perror("opne file error for write");
exit(EXIT_FAILURE);
}
ch = fgetc(fpread);
while ( ch!= EOF)
{
fputc(ch, fpwrite);
ch = fgetc(fpread);
}
fclose(fpread);
fclose(fpwrite);
}