我正在为一个项目制作另一个版本的单词混乱游戏。我从原始代码中使用了与游戏本身相同的设置，但是这个设置与文件有所不同。像以前一样，它将文字放入文件中的string array，然后使用数组中的单词进行随机播放并打印出混乱的单词，供用户解读。
与此程序不同的是，它允许用户选择他们想要用于争夺的单词组。程序编译得很好，但在他们选择了要使用的文件类型（并在需要时创建文件）之后，程序就会停止运行。我已经发布了下面的代码，代码中是否有某些内容导致它停止运行？如果是这样，我会喜欢修复它的一些技巧以及解释它导致问题的原因。
谢谢！
#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
#include <ctime>
#include <array>
#include <algorithm>
#include <cstring>
#include <cstdlib>
using namespace std;
void createFile(ofstream& file, string fileName, int wordCount) {
string word;
file.open(fileName + ".txt");
for (int i = 0; i < wordCount; i++) {
cout << "Enter a word: \n";
cin >> word;
file << word;
file << endl;
}
file.close();
}
void useFile(ifstream& file, string fileName) {
file.open(fileName + ".txt");
}
void main() {
srand(time(0));
int levelChoice, wordCount, i = 0;
string fileName, word, jumble, answer;
string words[10000];
ifstream infile;
ofstream outfile;
bool repeat = true, result, allowed = false;
char choice;
cout << "Let's play a word jumble game!\n";
cin.get();
do {
cout << "First, choose what you want to use to play.\n";
cout << "(1) Pre-made word list file\n(2) Custom file\n";
cin >> levelChoice;
do {
if (levelChoice == 1) {
cout << "Okay, please choose what you'd like to play!\n";
cout << "(1) Easy\n(2) Medium\n(3) Hard\n(4) Theme\n";
cin >> levelChoice;
if (levelChoice == 4) {
cout << "Please select a theme: \n";
cout << "(1) Colors\n(2) Emotions\n(3) Flowers\n(4) Nature\n(5) Seasons\n(6) Animals\n";
cin >> levelChoice;
switch (levelChoice) {
case 1:
infile.open("Theme (Colors).txt");
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
allowed = true;
break;
case 2:
infile.open("Theme (Emotions).txt");
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
allowed = true;
break;
case 3:
infile.open("Theme (Flowers).txt");
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
allowed = true;
break;
case 4:
infile.open("Theme (Nature).txt");
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
allowed = true;
break;
case 5:
infile.open("Theme (Seasons).txt");
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
allowed = true;
break;
case 6:
infile.open("Theme (Animals).txt");
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
allowed = true;
break;
default:
cout << "That was not an option, please try again.\n";
break;
}
}
else if (levelChoice < 1 || levelChoice > 4) {
cout << "Sorry, that was not a valid option, please try again.\n";
} else {
switch (levelChoice) {
case 1:
infile.open("Easy.txt");
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
allowed = true;
break;
case 2:
infile.open("Medium.txt");
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
allowed = true;
break;
case 3:
infile.open("Hard.txt");
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
allowed = true;
break;
}
}
} else if (levelChoice == 2) {
cout << "Okay, please enter the file name:\n";
cin >> fileName;
cout << "Now tell me how many words you'd like to enter into the file so I can create it: ";
cin >> wordCount;
cout << "Time to create your file!\n";
createFile(outfile, fileName, wordCount);
useFile(infile, fileName);
while (infile.peek() != EOF) {
infile >> words[i];
i++;
}
infile.close();
cout << "File created, you're ready to play!";
cin.get();
cin.get();
allowed = true;
} else {
cout << "That was not a valid option, please try again!\n";
}
} while (allowed == false);
int guess = 0;
int size = sizeof(words);
int random = rand() % size;
jumble = words[random];
random_shuffle(jumble.begin(), jumble.end());
cout << "Time to start guessing!\nType \"quit\" if you want to give up and find out the word!\nCareful though, you only get 10 guesses before you lose!\n";
cin.get();
cin.get();
cout << jumble << endl;
do {
cin >> answer;
if (answer == "quit" || answer == "Quit") {
cout << "Giving up? Okay! Ready to find out what the word was?";
cin.get();
cin.get();
cout << "The word was " << words[random] << endl;
cout << "Better luck next time!\n";
break;
} else {
result = strcmp(answer.c_str(), words[random].c_str());
if (result == true) {
cout << "Nope! Try again!" << endl;
guess++;
} else {
cout << "You got it!" << endl;
break;
}
}
} while (guess < 10);
if (guess == 10) {
cout << "Game over! You lose! Ready to find out what the jumbled word was?";
cin.get();
cin.get();
cout << "The word was " << words[random] << endl << "Better luck next time!";
}
cout << "Wanna play again? (Y or N)\n";
cin >> choice;
do {
switch (choice) {
case 'y':
case 'Y':
cout << "Okay, restarting!\n";
cin.get();
cin.get();
allowed = false;
break;
case 'n':
case 'N':
cout << "Okay, have a great day!\n";
repeat = false;
allowed = false;
break;
default:
cout << "Sorry, that was not a valid option, please try again!\n";
break;
}
} while (allowed == true);
} while (repeat == true);
}
答案 0 :(得分：0)
主要问题是你正在调用sizeof(words)，它返回words数组包含的字节数，而不是数组中的条目数。结果是size最终变得非常大（如240,000），因此对rand % size的调用可能会生成一个大于数组中元素数量的值，并且您将索引经过数组的结尾。
通过使用调试器运行应用程序，您可以找到这些类型的问题。通常，调试器会在导致问题的行上停止您的程序，并向您显示程序变量的状态，以便您可以找出问题所在。