C++ Return Statement - Learn about the return statement in C++ and how it is used to return values from functions. Understand its syntax and examples.
Executing the return statement in a no-return function is undefined behavior. (since C11)Keywordsreturn ExampleThis section is incompleteReason: improve Run this code #include <stdio.h> void fa(int i) { if (i == 2) return; printf("fa(): %d\n", i); } // implied return; int fb...
复制 // return_statement2.cpp #include <stdio.h> int max ( int a, int b ) { return ( a > b ? a : b ); } int main() { int nOne = 5; int nTwo = 7; printf_s("\n%d is bigger\n", max( nOne, nTwo )); } See Also Reference Jump Statements (C++) C++ Keywords中...
return statement goto statement Transfers of control Namespaces Enumerations Unions Functions Operator overloading Classes and structs Lambda expressions in C++ Arrays References Pointers Exception handling in C++ Assertion and user-supplied messages
return Statement in Program Termination (C++) 项目 2011/07/25 Issuing a return statement from main is functionally equivalent to calling the exit function. Consider the following example: 复制 // return_statement.cpp #include <stdlib.h> int main() { exit( 3 ); return 3; } The exit...
(); cout<<rev<<endl; return 0; } g++ test.cpp -o test test.cpp: In function ‘void rev()’: test.cpp:7:9: error: return-statement with a value, in function returning ‘void’ [-fpermissive] 7 | return 1; | ^ test.cpp: In function ‘int main()’: test.cpp:10:13: error...
return-statement with a value, in function returning 'void' [-fpermissive] May 24, 2022 at 9:02pm suslucoder(30) Im trying to connect postgresql db from my server which has ubuntu 18.04 I have the code below but when i compile it I get the error ...
“return-statement with no value”指的是在C++中,一个return语句没有返回任何值。例如,在一个应该返回int类型的函数中,return;语句就没有提供任何返回值。 2. 解释当函数声明为返回'int'类型时,为什么需要返回一个值 在C++中,当一个函数被声明为返回int类型时,这意味着该函数在执行完成后必须返回一个整数值给...
In the initialization of an object, when the source object is a nameless temporary and is of the same class type (ignoringcv-qualification) as the target object. When the nameless temporary is the operand of a return statement, this variant of copy elision is known as RVO, "return valueopt...
(max <= value) return max; return value; // won't be executed past 'return' statement std::exit(value); } int main() noexcept { std::cout << clamp(1, 2, 4); std::cout << clamp(3, 2, 4); std::cout << clamp(5, 2, 4); return 0; // the value '0' that in main...