Realizar un programa que ordene un vector de menor a mayor hacerlo con lógica

nclude <iostream>
#include <vector>
#include <algorithm>
using namespace std;

int main(){
    vector<int> vec;
    vec.push_back(1);
    vec.push_back(2);
    vec.push_back(3);
    vec.push_back(4);
    vec.push_back(5);
    vec.push_back(6);
    vec.push_back(7)