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Action: The problem found depends on the return code received with this reason code. If the return code is ENOENT, the pathname specified could not be found. If the return code is ENOTDIR, the pathname did not specify a directory. If the return code is EINVAL, either the pathname spe...
intvalue1,value2; //定义两个整型变量 cout<<"Pleaseinput two value:"<<endl; //提示输入信息 cin>>value1>>value2; //从键盘输入两个整型数 cout<<"Maybeexception code:"<<endl; //提示可能出现异常的代码信息 if(value2== 0) //如果除数为0则抛出异常 { throw0; } else //否则直接计算相除...
return answer; } /*设置ICMP报头*/ int pack(int pack_no) { int i,packsize; struct icmp *icmp; struct timeval *tval; icmp=(struct icmp*)sendpacket; //char sendpacket[4096]; icmp->icmp_type=ICMP_ECHO; icmp->icmp_code=0; #if 1 icmp->icmp_seq=pack_no; icmp->icmp_cksum = 0; #...
The thread function in the Win32 code cannot return a string value. Developers must use some other means to convey the string message back to the parent (for example, returning an index into a string array). The Win32 version of the thread function simply returns a DWORD value rather than...
Action: The problem found depends on the return code received with this reason code. If the return code is ENOENT, the pathname specified could not be found. If the return code is ENOTDIR, the pathname did not specify a directory. If the return code is EINVAL, either the pathname spe...
intmain(){printf("it's the main process step 1!!\n\n"); fork();//创建一个新的进程printf("step2 after fork() !!\n\n");inti;scanf("%d",&i);//防止程序退出return0; } 运行结果如下: 我们来分析一下以上的代码:程序在fork()函数之前只有一条主进程,所以只打印一次step 1;而执行fork(...
unix ExecuteUNIXcommand and return output collapse all in page For platform-independent code, use thesystemcommand. Syntax [status,cmdout] = unix(command) Description [status,cmdout] = unix(command)calls the operating system to execute the specified command and returns the standard output of the ...
cmd-status - Reports the status of commands including return code and duration. cmd-time - Collects the execution time of commands and exports the result to a variable that can be used elsewhere. It is similar to the built-in REPORTTIME function, but it is also slightly different. Unlike ...
* returns: -1 for illegal lval, or result of VLstore * warning: modifies the string, but restores it to normal */{char*cp;int rv;cp=strchr(str,'=');*cp='\0';rv=(okname(str)?VLstore(str,cp+1):-1);*cp='=';returnrv;}intokname(char*str)/* ...