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】：B