how to delete the first element of a vector in c++ code example
Example 1: c++ vector pop first element
std::vector<int> vect;
vect.erase(vect.begin());
Example 2: delete from front in vector c++
vector_name.erase(vector_name.begin());
vector_name.erase(vector_name.begin()+(x-1));
vector_name.pop_back();
Example 3: how to remove an element from a vector by value c++
std::vector<int> v;
v.erase(std::remove(v.begin(), v.end(), 99), v.end());
Example 4: remove element by value vector c++
#include<bits/stdc++.h>
using namespace std;
int main(){
vector<int> v;
v.push_back(20);
v.push_back(10);
v.push_back(30);
v.push_back(20);
v.push_back(40);
v.push_back(20);
v.push_back(10);
vector<int>::iterator new_end;
new_end = remove(v.begin(), v.end(), 20);
for(int i=0;i<v.size(); i++){
cout << v[i] << " ";
}
return 0;
}
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