本文介绍了功能未打印到日志文件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个在程序的main()中运行的日志文件.我也有一个在main()中调用的函数.该功能可以正常工作并打印到控制台，但是日志文件也可以正常工作.函数的返回值不会打印到日志文件中，我是否需要为此做些事情?该功能.
I have a log file that runs in the main() of the program. I also have a function that is called within the main(). The fuction works fine and prints to console, the log file works fine as well, however; the return values from the fuction don''t print to the log file, is there something specil that I have to do for this to happen? The function.
void decode_tcp(char *_packet)
{
TCPHEADER *tcp_header = (TCPHEADER *)_packet;
BYTE flags = ( ntohs(tcp_header->info_ctrl) & 0x003F );
if ( flags & 0x01 ) // FIN
printf("\n FIN " );
myfile << "\n FIN " ;
if ( flags & 0x02 ) // SYN
printf("\n SYN " );
myfile << "\n SYN " ;
if ( flags & 0x04 ) // RST
printf("\n RST " );
myfile << "\n RST " ;
if ( flags & 0x08 ) // PSH
printf("\n PSH " );
myfile << "\n PSH " ;
if ( flags & 0x10 ) // ACK
printf("\n ACK " );
myfile << "\n ACK " ;
if ( flags & 0x20 ); // URG
printf("\n URG " );
myfile << "\n URG " ;
printf("\n Sequence Number : %lu\n", ntohl(tcp_header->seq_number));
myfile << "\n Sequence Number :"<< ntohl(tcp_header->seq_number);
}推荐答案
if ( flags & 0x01 ) // FIN
printf("\n FIN " );
myfile << "\n FIN " ;
压痕得到纠正后?
我是否可以建议您始终使用大括号将if，do，while等目标括起来.
once the indentation has been corrected?
May I suggest you always use braces to bracket the target of if, do, while etc.
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