Getting compiler error

Question

#define MAX 5    
void bfs(int adj[][MAX],int visited[],int start,int order){

    }
    main(){
        int order;
        cin>>order;
        int adj[MAX][MAX];// **Here**
        bfs(adj,visited,0,order);

    }

Why am I getting a compiler error:

cannot convert 'int (*)[order]' to 'int (*)[5]' for argument '1'
            to 'void bfs(int (*)[5], int*, int, int)'

if I replace 2nd dimension of adj with order variable having same value as MAX macro. Would be grateful for any insight.

Have left the function bfs and header files blank intentionally as they are irrelevant.

Here's the full code if it helps..

#include<bits/stdc++.h>
#define MAX 5
using namespace std;
void bfs(int adj[][MAX],int visited[],int start){
    int queue[MAX],rear=-1,front=-1;
    queue[++rear]=start;
    visited[start]=1;
    while(front!=rear){
        start=queue[++front];
        if(front!=rear)
        cout<<(char)(start+65);
        for(int i=0;i<MAX;i++){
            if(adj[start][i]==1 && visited[i]==0){
                queue[++rear]=i;
                visited[i]=1;
            }
        }
    }

}
main(){
    int order;
    int visited[MAX]={0};
    int adj[MAX][order];//here
    cin>>order;
    cout<<"Enter the adjacency matrix\n";
    for(int i=0;i<MAX;i++)
        for(int j=0;j<MAX;j++){
            cin>>adj[i][j];
        }
        bfs(adj,visited,0);

}