\n";for(std::stringline;std::cout<<"> "&&std::getline(std::cin, line)&&line!="quit";)std::cout<<line<<'\n';} 输出: true 输入 'quit' 以退出。 > 3... > 2... > 1... > 标准库 因为operator&&和operator||的短路求值性质对重载不适用,又因为有布尔语义的类型不常见,故只有二个...
返回类型是左值引用的函数调用或重载运算符表达式,例如std::getline(std::cin, str)、std::cout<<1、str1=str2或++it; [展开]延伸内容 a=b,a+=b,a%=b,以及所有其他内建的赋值及复合赋值表达式; ++a和--a,内建的前置自增与前置自减表达式; ...
";std::getline(std::cin, name);std::cout<<"Hello "<<name<<", nice to meet you.\n";// read file line by linestd::istringstreaminput;input.str("1\n2\n3\n4\n5\n6\n7\n");intsum=0;for(std::stringline;std::getline(input, line);)sum+=std::stoi(line);std::cout<<"\nThe...
比如,std::cin或者std::endl。即使这个变量的类型是右值引用,由它的名字组成的表达式也是个左值表达式。 2) 把左值引用作为返回的函数或者重载操作符。 比如,std::getline(std::cin,str),std::cout << 1, str1 = str2, 或 ++it; 3) a = b, a += b, a %= b, 以及其他所有内置[built-in]的赋...
a function call or an overloaded operator expression, whose return type is lvalue reference, such as std::getline(std::cin, str), std::cout << 1, str1 = str2, or ++it; a = b, a += b, a %= b, and all other built-in assignment and compound assignment expressions; ++a and...
a function call or an overloaded operator expression of lvalue reference return type, such as std::getline(std::cin, str), std::cout << 1, str1 = str2, or ++it; (运算符重载并且返回值是引用的方法) a = b, a += b, a %= b, and all other built-in assignment and compound assig...
cout <<"\nTo input client data!\n"<<" Name: ";if( !getline( cin, name))returnfalse; cout <<" Number: ";if( !( cin >> nr))returnfalse;returntrue; }voidputClient(conststring& name,constlong& nr) {// name and nr can only be read!cout <<"\n Name: "; cout << name ...
// String input using operator << and getline() #include <iostream.h> int main(int argc, char *argv[]) { char text1[100], text2[100]; // prompt and get input for text arrays cout << “Enter two words:\n”; cin >> text1 >> text2; ...
C++ - Read string using cin.getline() C++ - Generate random numbers C++ - Print Reverse Triangle Bridge Pattern C++ Constructor & Destructor Programs C++ - Example of default constructor or no argument constructor C++ - Example of parameterized constructor C++ - Example of copy constructor ...
cout <<”Enter book title (quit to quit): “; std::getline(std::cin,rr.title); if (rr.title == “quit”) return false; std::cout << “Enter book rating: “; std::cin >> rr.rating; if (!std::cin) return false; // get rid of rest of input line while (std::cin.g...