RT,应如何改正,谢谢各位大佬(除了固定第二维大小)

#include<iostream>
#include<cstdio>
using namespace std;
const int N=105;
#define db double
db b[N][N];
bool solve(int _n,db **v){}
db v[N][N];
int n,m;
int main(){
	solve(n,v);
}