C++ minsweeper 原型上的分段错误

Question

我是一名刚学习 c++ 的新编程学生。我正在为一项任务处理扫雷克隆，但我遇到了分段错误。我不知道它发生在哪一行，因为我在 puTTy 中运行程序并在 emacs 中编写它。它们中的任何一个是否提供了一些功能来定位我不知道的分段错误？

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;
const int ROWS = 9;
const int COLS = 26;
void populate_board(int array[][COLS]);
void print_board(int array[][COLS]);

int main(){
  int choice;
  int targets[ROWS][COLS];
  int guessed_spaces[ROWS][COLS];
  populate_board(targets);
  do{
    cout << "Press '0' to exit." << endl;
    cin >> choice;
    switch(choice){
      case 0:
        break;
      default:
        print_board(targets);
    }
  }while (choice !=0);
}

void populate_board(int targets[][COLS]){
  int row = 0;
  int col = 0;

  for(row = 0; row < ROWS; row++){
    for(col = 0; col < COLS; row++){
      srand (time(NULL));
      int random = rand() % 2;
      targets[row][col] = random;
    }
  }
}

void print_board(int targets[][COLS]){
  int row = 0;
  int col = 0;
  for(row = 0; row < ROWS; row++){
    cout << row << "|";
    for(col = 0; col < COLS; col++){
      cout << targets[row][col] << " ";
    }
    cout << "|" << endl;
  }
  cout << "  - - - - - - - - - - - - - - - - - - - - - - - - - - -" << endl;
  cout << "  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z" << endl;
}

Answer 1

这里 ：

for(row = 0; row < ROWS; row++)
{
    for(col = 0; col < COLS; row++)
    {
        srand(time(NULL));
        int random = rand() % 2;
        targets[row][col] = random;
    }
}

您在内循环和外循环中row递增两次。因此，它将超越targets界限。您需要将其更改为：

for(row = 0; row < ROWS; row++)
{
    for(col = 0; col < COLS; col++)
    {
        srand(time(NULL));
        int random = rand() % 2;
        targets[row][col] = random;
    }
}