cpp int anotherFunction() { if (anotherCondition) { // 执行一些操作 return result; // 如果有特定的结果需要返回 } return -1; // 默认返回值,表示没有特定的结果 } 重构代码以避免不必要的return语句:如果函数中有不必要的return语句(例如,在条件分支的末尾),可以考虑重构代码,使逻辑更加清晰,并确保...
int myFunction(int x, int y) { return x + y;}int main() { cout << myFunction(5, 3); return 0;} // Outputs 8 (5 + 3) Try it Yourself » You can also store the result in a variable:Example int myFunction(int x, int y) { return x + y;}int main() { int z = ...
Example 1: Basic Function Returningvoid In this example, we shall define a functionprintMessage()with void return type. Program </> Copy #include<iostream>usingnamespacestd;voidprintMessage(){cout<<"Hello, World!"<<endl;}intmain(){printMessage();// Call the void functionreturn0;} ...
C 语言设计了"函数类型":"函数类型/function type" 用来描述, 说明为 return 类型的函数. 因此与 ret...
Edit & run on cpp.sh May 24, 2022 at 9:41pm lastchance(6980) You declared and defined your function asvoidpsqlconn(), the "void" signifying that it returned nothing. Then you allowed it (in principle) toreturn1; May 25, 2022 at 3:42pm ...
prog1.cpp: In function'bool str_subrange(const string&, const string&)': prog1.cpp:11:4: error:return-statement with no value,infunction returning'bool'[-fpermissive]return; 如果补上合适的返回值编译器不报错,证明编译器没有检查出“在循环后面漏了一个return”这个错误!同时也证明了源代码能通过...
C语言规定，如果一个函数没有明确写明返回类型，则默认是int型的，而不是默认为void if(n%2==1){printf("data error!%d is not a even number.\n",n);return;} 因为main被默认为int型，所以这里要明确写出来，返回值是多少。随便加个数就行，比如return -1;你...
main.cpp: In member function 'virtual std::vector<int>& Base::fun()':main.cpp:9:16: warning: reference to local variable 'unused' returned [-Wreturn-local-addr]9 | return unused;| ^~~~main.cpp:8:26: note: declared here8 | std::vector<int> unused;| ^~~~ 问一问...
<cpp |language Statements Terminates the current function and returns the specified value (if any) to the caller. Syntax attr-(since C++11)sequence of any number ofattributes expression-expression, convertible to the function return type ...
From cppreference.com <c |language Specifies that the function does not return to its point of invocation. Syntax _Noreturnfunction_declaration(since C11)(deprecated in C23) Explanation The_Noreturnkeyword appears in a function declaration and specifies that the function does not return by exec...