#define PR(...) printf(__VA_ARGS__) intmain() { int wt=1,sp=2; PR("hello\n");//输出:hello PR("weight = %d, shipping = %d",wt,sp);//输出:weight = 1, shipping = 2 return0; } 这里再介绍几个系统的宏: __FILE__ 宏在预编译时会替换成当前的源文件cpp名 __LINE__宏在预...
#definePR(...) printf(__VA_ARGS__)intmain(){intwt=1,sp=2;PR("hello\n");//输出:helloPR("weight = %d, shipping = %d",wt,sp);//输出:weight = 1, shipping = 2return0; } 这里再介绍几个系统的宏: __FILE__ 宏在预编译时会替换成当前的源文件cpp名 __LINE__宏在预编译时会替换...
namespaceA{voidg(){cout<<"g()"<<endl;};voidf(){cout<<"f()"<<endl;};}namespaceX{usingA::f,A::g;} 在C++17之前,使用多个using声明时要分别进行声明。 1 使用变长的 using 声明 在实际编程时,通过使用可变的 using 声明可以实现泛型代码从可变数量的所有基类中派生同一种运算。这种方法的典型...
而这个冲突本来是可以避免的。其实在源文件（*.cpp）里面怎么 using 都是没关系的，因为 cpp 里的代码...
--printf_support={full| nofloat|minimal} Enables support for smaller, limited versions of the printf function family (sprintf, fprintf, etc.) and the scanf function family (sscanf, fscanf, etc.) run-time-support functions. The valid values are: full: Supports all format specifiers. This is...
{ emp_number = 0; printf("Enter employee number (0 to quit): "); gets(temp_char); emp_number = atoi(temp_char); if (emp_number == 0) break; // Branch to the notfound label when the // 1403 ("No data found") condition occurs EXEC SQL WHENEVER NOT FOUND GOTO notfound; ...
printf("song::count::yearr=%d", tong::count::year); return 0; } 结果如下 name=张三...
printf(__VA_ARGS__)) debug("Flag"); debug("X = %d\n",x); showlist(The first, second, and third items.); report(x>y, "x is %d but y is %d", x, y); which results in the following: fprintf(stderr, "Flag"); fprintf(stderr, "X = %d\n", x); puts("The fi...
AsyncResponseStream *response = request->beginResponseStream("text/html"); response->addHeader("Server","AsyncWebServer_STM32"); response->printf("<!DOCTYPE html>Webpage at %s", request->url().c_str()); response->print("Hello "); response->print(request->client()->remoteIP()); ...
Printf("initial MatProfile count: %v\n", gocv.MatProfile.Count()) leak() fmt.Printf("final MatProfile count: %v\n", gocv.MatProfile.Count()) var b bytes.Buffer gocv.MatProfile.WriteTo(&b, 1) fmt.Print(b.String()) }Running this program produces the following output:initial Mat...