已知：int ans,以二进制方式将ans的值写入输出流文件对象outfile中，下列选项中正确的语句是

已知：int ans,以二进制方式将ans的值写入输出流文件对象outfile中，下列选项中正确的语句是

A.ofstream outfile(“result.txt”,ios::out|ios::binary);outfile.write((int*)&ans,sizeof(int));

B.ofstream outfile(“result.txt”,ios::out|ios::binary)；outfile.write(char*)&ans,sizeof(int));

C.ifstream outfile(“result.txt”,ios::out|ios::binary);outfile.write((int*)&ans,ans);

D.ifstream outfile(“result.txt”,ios::out|ios::binary);outfile.write((char*)&ans,ans);

正确答案是B