fread和fwrite函数

#include <stdio.h>int main(int argc, char *argv[]){FILE *f = fopen("test.txt","rb") ;FILE *f2 = fopen("test_2.txt","wb") ;if(f==NULL){perror(NULL);return 0;}char buf[10]={0};//如果为int 会有不能完全复制的问题 char count ;while(!feof(f)){count = fread(buf,sizeof(char),10,f);        fwrite(buf,sizeof(char),count,f2);      printf("count=%d\n",count);} printf("\n");   fclose(f);return 0;}