N진수 출력 C++

#include <stdio.h>
#include <iostream>
#include <algorithm>
#include <vector>
#include <math.h>

using namespace std;

int main() {
	//freopen("input.txt.txt","rt",stdin);
	int n,k,i;
	scanf("%d %d", &n, &k);
	vector<int> v;
	
	
	while(n>0){
		v.push_back(n%k);
		n = n/k;
	}	
	for(i=v.size()-1; i>=0; i--){
		if(v[i]>=10){
			printf("%c", ('A'+(v[i]-10)));
		}
		else printf("%d",v[i]);
	}
	
	return 0;	
}

 

 

 

#include <stdio.h>
#include <iostream>
#include <algorithm>
#include <vector>
#include <math.h>

using namespace std;

int stack[100], top=-1;
void push(int x){
	stack[++top] = x;
}
int pop(){
	return stack[top--];
}

int main() {
	//freopen("input.txt.txt","rt",stdin);
	int n,k,i;
	scanf("%d %d", &n, &k);
	char str[20]="0123456789ABCDEF";
	while(n>0){
		push(n%k);
		n = n/k;
	}
	while(top!=-1){
		printf("%c",str[pop()]);
	}
	
	return 0;	
}