我的数据生成器一直运行时错误，还有救吗

能调好给2关

#include <bits/stdc++.h>
using namespace std;
int solution(){
	//std
}
void test(int id){
	//生成输入数据
}
int n;
char name[15] = "000";
int main(){
	cin >> n;
	for(int i = 1;i <= n;i++){
		name[2]++;
		if(name[2] > '9') name[2] = '0',name[1]++;
		if(name[1] > '9') name[1] = '0',name[0]++;
		freopen(name[0]+name[1]+name[2]+".in","w",stdout);
		test(i);
		fclose(stdout);
		freopen(name[0]+name[1]+name[2]+".in","r",stdin);
		freopen(name[0]+name[1]+name[2]+".out","w",stdout);
		solution();
		fclose(stdin);
		fclose(stdout);
		
	}
	
	return 0;
}