我正在使用Visual Studio 2012.
我的解决方案有3个项目
了projectA
项目B
项目C
而层次结构就像
projectC依赖于projectB,而projectB又取决于projectA.projectC中有一个main函数,projectB和projectA中没有main.我得到的错误是:
error LNK1561: entry point must be defined projectA
error LNK1561: entry point must be defined projectB
我已尝试在配置属性 - >链接器 - >系统 - >子系统更改为控制台(/ SUBSYSTEM:CONSOLE)但问题仍然存在
帮助我解决这个问题.
嗨这是Adobe面试中提出的问题.
Numbers ending in 3 have at least one multiple having all ones.
for eg., 3 and 13 have amultiples like 111 and 111111 respectively. Given such
a no. , find the smallest such multiple of that number. The multiple can
exceed the range of int, long. You cannot use any complex data structure.
你能为我提供一个有效的解决方案吗？
我正在创建一个新线程,我在其中传递一个类类的对象demo在.h文件中定义
int threadentry(void* data)
{
demo* inst=(demo*) data;
cout << "Value of inst "<<hex << &inst<< endl;//value is different from below
}
int main()
{
while(1)
{
demo* inst=new demo();
cout << "Value of inst "<<hex << &inst<< endl; //value is coming different from above
HANDLE threads;
DWORD threadId1;
if ((threads = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)threadentry,
(void *)inst, 0, &threadId1)) == NULL)
return -1;
delete inst;
system("pause");
}
}
我认为值应该是不同的,因为地址被复制到threadentry的数据变量中.如何检查这些是否是传递的对象.
我是socket编程的新手.我试图创建一个UDP套接字,但该socket()函数返回-1
signed long int sockfd;
sockfd=socket(AF_INET, SOCK_DGRAM, 0); //socket Function returns -1 Value
你能告诉我这个套接字函数何时返回-1值？
我正在尝试编译一个项目，但遇到一个奇怪的错误
error MSB6003: The specified task executable "CL.exe" could not be run. The process cannot
access the file 'C:\Program Files\Microsoft DKs\Windows\v7.1\Samples\multimedia\directshow\
filters\myparser\UnitTest\Debug\cl.read.1.tlog' because it is being used by another
process. C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V110\Microsoft.CppCommon.targets
什么可能导致这种情况，我该如何解决？
我想打印void指针的地址
u32 j;
for (j = 0; j < sizeof(struct queue_header); j += 4)
{
printf("0x%x ",(u32 *)((u32 *)q->q_hdr + j)); //q_hdr is a void pointer
}
但该类型转换给出了错误:
警告:从指针强制转换为不同大小的整数[-Wpointer-to-int-cast]
你能告诉我怎么打印地址吗？