C语言中复制文件

#include<stdio.h>int main(){FILE *dest_p,*source_p;int ch;source_p=fopen("1.tar.gz","rb");dest_p=fopen("2.tar.gz","wb");    while((ch=getc(source_p))!=EOF){putc(ch,dest_p);}fclose(dest_p);fclose(source_p);return 0;}