复制文件时遇到问题
码:
bool done; FILE* fin; FILE* fout; const int bs = 1024*64;//64 kb char* buffer[bs]; int er,ew,br,bw; long long int size = 0; long long int sizew = 0; er = fopen_s(&fin,s.c_str(),"rb"); ew = fopen_s(&fout,s2.c_str(),"wb"); if(er == 0 && ew == 0){ while(br = fread(buffer,1,bs,fin)){ size += br; sizew += fwrite(buffer,fout); } done = true; }else{ done = false; } if(fin != NULL)fclose(fin); if(fout != NULL)fclose(fout);
以某种方式fwrite写入整个缓冲区忽略计数值(br)
一些例子如何:
copying 595 file of 635 DONE. 524288/524288 B copying 596 file of 635 DONE. 524288/524288 B copying 597 file of 635 DONE. 65536/145 B copying 598 file of 635 DONE. 65536/16384 B copying 599 file of 635 DONE. 65536/145 B copying 600 file of 635 DONE. 65536/67 B copying 601 file of 635 DONE. 65536/32768 B copying 602 file of 635 DONE. 65536/67 B
谁知道问题出在哪里?