while-loop 相关问题

这里是学生程序员。每次我运行程序时，编译器都会终止并提示存在浮点异常。这是我的代码供参考： #包括 #包括这里是学生程序员。每次我运行程序时，编译器都会终止并提示存在浮点异常。这是我的代码供参考： #include <iostream> #include <cmath> #include <vector> #include <cstdlib> #include <string> using namespace std; int guesses = 3; int quantity; int discard_value; vector<int> void_numbers(quantity); int points = 10 + quantity * 5; bool unique = 1; int target = rand() % quantity + 1; string check_guess(int guess) { for (int i = 0; i < void_numbers.size(); i++) { if (guess == void_numbers[i]) { return "You guessed a void number. You lose."; } } if (guess < target && guesses != 0) { return "Your guess is lower than the number."; } else if (guess > target && guesses != 0) { return "Your guess is higher than the number."; } else if (guess == target && guesses != 0) { return "You guessed the number. You win " + to_string(points) + " points."; } else if (guesses == 0) { return "You ran out of guesses. You lose."; } else { return "Invalid input. Please try again."; } } void test_input() { cout << "How many void numbers would you like to add? (1-19): " << endl; while(invalidinput) { cin >> quantity; if (quantity < 1 || quantity > 19 || cin.fail()) { cin.clear(); cin.ignore(); cin >> discard_value; cout << "Invalid input. Please try again." << endl; } else { break; } } while (void_numbers.size() < quantity) { int void_number = rand() % quantity + 1; for (int i = 0; i < void_numbers.size(); i++) { if (void_numbers[i] == void_number) { unique = 0; break; } } if (unique) { void_numbers.push_back(void_number); } } for (int i = 0; i < void_numbers.size(); i++) { for (int j = i + 1; j < void_numbers.size(); j++) { if (void_numbers[i] == void_numbers[j]) { void_numbers.erase(void_numbers.begin() + j); j--; int temp_number = rand() % quantity + 1; for (int i = void_numbers.size() - 1; i >= 0; i--) { if (void_numbers[i] == temp_number || void_numbers[i] == target) { void_numbers.erase(void_numbers.begin() + j); } } } } } for (int i = 0; i < void_numbers.size(); i++) { cout << void_numbers[i] << endl; //currently have this here to test if the void numbers are being generated correctly cout << target; } } int main() { srand(time(0)); int quantity; int target = rand() % quantity + 1; char play; cout << "Welcome to the Numbers Game." << endl; cout << "1. In this game you have 3 guesses to guess a randomly-generated number between 1 and 20. The game will inform you if your guess is higher or lower than the random number." << endl; cout << "2. If you guess the number without running out of guesses, you receive 10 points. If you want more points, you have the option of inputting a quantity of void numbers." << endl; cout << "3. Void numbers make you instantly lose the game if you guess one of them, but each additional void number adds 5 additional points to your total score." << endl; cout << "4. If you use all your guesses and don't guess the number, you lose the game." << endl; test_input(); } 整个程序是一个用户猜数字的游戏。在游戏开始之前，用户可以输入一定数量的无效数字，如果猜中其中一个数字，则用户将输掉游戏。 test_input 函数应该用于在向量中生成从 1 到用户想要的任何数量（最多 19）的数字，而无需任何重复数字。向量中的数字也不应该与目标变量中存储的数字匹配。真的要避免全局变量。 int quantity; 这是一个没有初始化器的变量定义。当它出现在块作用域时，它的值将是不确定的。相反，这里我们将它放在文件范围内，并且它是一个全局变量，其值初始化为零。 int target = rand() % quantity + 1; 这通过计算 target 来初始化另一个全局变量 rand() % quantity +1。由于 quantity 为零，因此除以零，这是未定义的行为，任何事情都可能发生。在您的特定情况下，它可能会导致除零浮点异常信号，但这不能保证。

c++ loops for-loop while-loop floating-point-exceptions

回答 1 投票 0

为什么 != 运算符似乎没有用？ [重复]

kg_p= input('您想以公斤还是磅输入您的体重？') 而 kg_p !='KG' 或 'POUND'： print('您输入的答案无效') kg_p= input('您想输入您的w...

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我有一个名为 file.txt 的文本文件，其中包含以下条目：- 健康健康健康健康健康不良最初的健康最初的健康现在我计算健康的初始数量......

bash shell while-loop

回答 3 投票 0

为什么在Python中遍历链表时原始链表头会改变？我是不是做错了什么？

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