Question

main.cpp

#include <iostream>
#include <vector>
#include <cstdlib>
#include <chrono>

using namespace std;
int randNum = 0;
int digit = 0;
int length = 0;
int choice = 0;
int remainder = 0;
int counter = 0;
int origArray[5] = { };
int reverseArray[5] = { };
int temporary = 0;
int index = 0;
bool repetition = true;

int main () {
    srand(std::chrono::duration_cast<std::chrono::milliseconds>
     (std::chrono::system_clock::now().time_since_epoch()).count()%2000000000);
    // needed to autograde some test cases in Mimir

    do {
        cout << "Enter number of digits in code (3, 4 or 5): ";
        cin >> choice;
        cout << endl;
    }   while ((choice != 0) && (choice != 3) && (choice !=4) && (choice !=5));
    switch (choice) {
    case 0: {
        cout << "Enter code: ";
        cin >> digit;
        cout << endl;
            while (digit > 0) {
                remainder = digit % 10;
                digit = digit / 10;
                origArray[counter] = remainder;
                counter++;
            }// while loop that separates digits in reverse
            cout << "Enter number of digits in code: " << endl;
            cin >> length;
            for (int i = 0; i < length; i++) {
                reverseArray[i] = origArray[length - i - 1];
            }// for loop that sets the digits in the right order
            cout << "Number to guess: ";
            for (int i = 0; i < length; i++) {
                cout << reverseArray[i];
                if (i < length-1)
                    cout <<"-";
            }// for loop that outputs the digits with a dash
    }// what runs when 0 is selected
    break;
    default: {
            while(temporary < choice) {
                repetition = false;
                randNum = rand() % 10;
                for (int i = 0; i < choice; i++) {
                    if (randNum == reverseArray[i])
                        repetition = true;
                }// for loop that sees if random number is equal to inputted 
digit value array
                if (repetition == false) {
                    reverseArray[index] = randNum;
                    index = index + 1;
                    repetition = repetition + 1;
                }// for loop that populates array with random digits
            }// while loop that goes through each index of array.
            cout << "Number to guess: ";
            for (int i = 0; i < choice; i++) {
                cout << reverseArray[i];
                if (i < choice-1)
                    cout <<"-";
            }//for loop that outputs the digits with a dash
            break;
        }// what happens when 3, 4, or 5 are selected
    }//switch statement
}

每当运行默认情况下，我都会收到“ cygwin_exception :: open_stackdumpfile：将堆栈跟踪信息转储到class4.exe.stackdump”。我正在日食中运行它。

这种情况有时会发生，但我不知道为什么它有时只会发生。

由于无法在网上找到有用的信息，我将不胜感激。

谢谢

Answer 1

在

处存在“超出范围的异常”

reverseArray[index] = randNum;
index = index + 1;
repetition = repetition + 1;

可以通过范围检查条件来防止

if(0 <= index && index < 5){
    reverseArray[index] = randNum;
    index = index + 1;
    repetition = repetition + 1;
}

我不确定这种情况是否会改变您代码的逻辑，然后如果输入0，它会给出一个数字序列但是对于3或4或5，它会产生一个巨大的循环，就像无限循环一样

cygwin_exception :: open_stackdumpfile：将堆栈跟踪信息转储到class4.exe.stackdump

1 个答案: