G :数键在“]”令牌之前不是整数常数
g++ : array bound is not an integer constant before ‘]’ token
当我尝试编译我的代码时，我在G 产生此错误代码方面遇到麻烦：
maze.h:16:29: error: array bound is not an integer constant before ‘]’ token
bool canMove(int m[mazeSize][mazeSize], int r, int c);
现在，我已经对此错误进行了一些研究，并且似乎是由于编译时不知道的数组大小而导致的。我已经尝试使数组不变，但是由于稍后在代码中重新分配数组并产生此错误时，最终会导致更多错误：
： maze.cpp: In member function ‘int Maze::startMazeGen()’:
maze.cpp:185:15: error: assignment of read-only location ‘maze[i][j]’
maze[i][j] = 1;
^
我还看到人们提到的是，与矢量一起使用会更容易，但是我也在尝试将代码重新应用以与矢量合作而不是数组时遇到问题。
这是我的其余代码：
Movem.h
#pragma once
#include <iostream>
#include <curses.h>
#ifndef MOVEMENT_H
#define MOVEMENT_H
class Movement
{
public:
static const int playerX = 2; // sets player starting position
static const int playerY = 2;
};
#endif
运动.cpp
#include <iostream>
#include <curses.h>
#include <ctime>
#include "maze.h"
//#include "movement.h"
bool running = true;
int playerX = 2;
int playerY = 2;
//Maze::maze Maze::mazeGen;
//int Maze::mazeGen.Maze::maze::generateMaze::maze(int m[Maze::mazeSize]
[Maze::mazeSize], int r, int c);
// Detect Char input
// and move player in direction
void getUserInput()
{
char userInput = getch();
if (userInput == 'w') {
int playerY2 = playerY - 1;
if (Maze::maze[playerY2][playerX] == ' ') {
Maze::maze[playerY][playerX] = ' ';
playerY--;
Maze::maze[playerY][playerX] = 'x';
}
}
if (userInput == 'a') {
int playerX2 = playerX - 1;
if (Maze::maze[playerY][playerX2] == ' ') {
Maze::maze[playerY][playerX] = ' ';
playerX--;
Maze::maze[playerY][playerX] = 'x';
}
}
if (userInput == 's') {
int playerY2 = playerY + 1;
if (Maze::maze[playerY2][playerX] == ' ') {
Maze::maze[playerY][playerX] = ' ';
playerY++;
Maze::maze[playerY][playerX] = 'x';
}
}
if (userInput == 'd') {
int playerX2 = playerX + 1;
if (Maze::maze[playerY][playerX2] == ' ') {
Maze::maze[playerY][playerX] = ' ';
playerX++;
Maze::maze[playerY][playerX] = 'x';
}
}
}
// Main game update
// Runs through all functions required
void update()
{
getUserInput();
clear();
Maze::generateMaze;
refresh();
}
//
//
/*int main()
{
// Initate nCurses display
initscr();
while (true) {
update();
}
// End nCurses display
endwin();
return 0;
}*/
迷宫
#pragma once
// MAZE.h
#include <iostream>
#include <ctime>
#ifndef MAZE_H
#define MAZE_H
extern int r;
extern int c;
extern int mazeSize; //number can be changed to make some big sweaty mazes making it an even number makes it act a bit weird sometimes so its better to use an odd number
extern int maze[mazeSize][mazeSize];
class Maze
{
public:
int blockedSquare = 1;
void move(int m[mazeSize][mazeSize], int &r, int &c);
bool canMove(int m[mazeSize][mazeSize], int r, int c);
void solve(int m[mazeSize][mazeSize], int &r, int &c);
bool canSolve(int m[mazeSize][mazeSize], int r, int c);
void generateMaze(int m[mazeSize][mazeSize], int r, int c);
int findStart();
void printMaze(int m[mazeSize][mazeSize]);
int startMazeGen();
};
#endif
Maze.cpp
#include <iostream>
#include <ctime>
#include <vector>
#include "maze.h"
bool foundExit = false;
int mazeSize = 31;
int maze[mazeSize][mazeSize] = { 0 };
void Maze::generateMaze(int const m[mazeSize][mazeSize], int r, int c)
{
bool made = false;
while (made == false)
{
if (c == mazeSize - 1)
foundExit = true;
if (canSolve(m, r, c))
{
solve(m, r, c);
}
else if (canMove(m, r, c))
{
m[r][c] = 2; //2 means you can't move from that square, setting any lower stops maze from being made
move(m, r, c); //move to first open space that can be found
}
else
made = true;
}
}
void Maze::move(int m[mazeSize][mazeSize], int &r, int &c)
{
if (m[r][c + 1] == 0)
c++;
else if (m[r + 1][c] == 0)
r++;
else if (m[r][c - 1] == 0)
c--;
else if (m[r - 1][c] == 0)
r--;
else
generateMaze(maze, r, c); //if maze cant be solved it generates a new one so the player doesnt have something that is impossible to solve
}
bool Maze::canMove(int m[mazeSize][mazeSize], int r, int c) //if there is an adjacent zero space, return true
{
if (m[r][c + 1] == 0)
return true;
else if (m[r + 1][c] == 0)
return true;
else if (m[r][c - 1] == 0)
return true;
else if (m[r - 1][c] == 0)
return true;
else
return false;
}
void Maze::solve(int m[mazeSize][mazeSize], int &r, int &c) //solves maze through with dijkstras algorithmto ensure it can be solved
{
bool foundSolution = false;
while (foundSolution == false)
{
int direction = (1 + rand() % 4) * 3;
switch (direction)
{
case 3:
if (c + 1 <= mazeSize - 1 && m[r][c + 2] == blockedSquare && m[r - 1][c + 1] == blockedSquare && m[r + 1][c + 1] == blockedSquare && m[r][c + 1] == blockedSquare)
{
if (c == mazeSize - 2 && foundExit == true)
; //do nothing
else
{
c++;
foundSolution = true;
}
}
break;
case 6:
if (r + 1 <= mazeSize - 2 && m[r + 2][c] == blockedSquare && m[r + 1][c + 1] == blockedSquare && m[r + 1][c - 1] == blockedSquare && m[r + 1][c] == blockedSquare && c != 0 && c != mazeSize - 1)
{
r++;
foundSolution = true;
}
break;
case 9:
if (c - 1 >= 0 && m[r][c - 2] == blockedSquare && m[r - 1][c - 1] == blockedSquare && m[r + 1][c - 1] == blockedSquare && m[r][c - 1] == blockedSquare && c - 1 != 0)
{
c--;
foundSolution = true;
}
break;
case 12:
if (r - 1 >= 1 && m[r - 2][c] == blockedSquare && m[r - 1][c + 1] == blockedSquare && m[r - 1][c - 1] == blockedSquare && m[r - 1][c] == blockedSquare && c != 0 && c != mazeSize - 1)
{
r--;
foundSolution = true;
}
break;
}
}
m[r][c] = 0;
}
bool Maze::canSolve(int m[mazeSize][mazeSize], int r, int c) //if an adjacent square can be moved to, return true
{
bool solvable = false;
if (r <= mazeSize - 3 && m[r + 2][c] == blockedSquare && m[r + 1][c + 1] == blockedSquare && m[r + 1][c - 1] == blockedSquare && m[r + 1][c] == blockedSquare && c != 0 && c != mazeSize - 1) //if adjacent space can be moved to
{
solvable = true;
}
else if (c <= mazeSize - 2 && m[r][c + 2] == blockedSquare && m[r - 1][c + 1] == blockedSquare && m[r + 1][c + 1] == blockedSquare && m[r][c + 1] == blockedSquare)
{
if (c == mazeSize - 2 && foundExit == true)
; //do nothing
else
{
solvable = true;
}
}
else if (r >= 2 && m[r - 2][c] == blockedSquare && m[r - 1][c + 1] == blockedSquare && m[r - 1][c - 1] == blockedSquare && m[r - 1][c] == blockedSquare && c != 0 && c != mazeSize - 1) //if not on extreme left or right
{
solvable = true;
}
else if (c >= 1 && m[r][c - 2] == blockedSquare && m[r - 1][c - 1] == blockedSquare && m[r + 1][c - 1] == blockedSquare && m[r][c - 1] == blockedSquare && c - 1 != 0)
{
solvable = true;
}
return solvable;
}
int Maze::findStart()
{
return 1 + rand() % (mazeSize - 2);
}
void Maze::printMaze(int m[mazeSize][mazeSize])
{
std::cout << std::endl;
for (int i = 0; i < mazeSize; ++i) {
for (int j = 0; j < mazeSize; ++j)
{
switch (m[i][j])
{
case 0:
std::cout << " ";
break;
case 1:
std::cout << "▓▓";
break;
case 2:
std::cout << " ";
break;
case 3:
std::cout << " ";
break;
}
}
std::cout << std::endl;
}
}
int Maze::startMazeGen()
{
srand(time(0));
for (int i = 0; i < mazeSize; ++i)
for (int j = 0; j < mazeSize; ++j)
maze[i][j] = 1;
int r = findStart();
//int r = 0;
int c = 0;
maze[r][c] = 0;
generateMaze(maze, r, c);
maze[r][c] = 2;
printMaze(maze);
std::cout << "Press enter to continue ...";
std::cin.get();
}
此代码的目的是随机生成迷宫，解决它，然后在屏幕上打印到屏幕上。如果无法解决迷宫，它将一直生成新的迷宫，直到可以解决。
在此问题上，任何帮助都将受到赞赏。谢谢！
"现在，我已经对此错误进行了一些研究，并且似乎是由于编译时不知道的数组大小而导致的。我尝试使数组不变，但是那是最终在稍后在代码中重新分配数组"
"，稍后会引起更多错误您在这里混合了两件事，阵列和数组 size 。
阵列大小应该是一个编译时常数。由于您要分配给数组，因此数组元素根本不应是const。
const int arrSize = 3;
int arr[arrSize][arrSize];
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