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How to count vector elements in C++

2 Answers

0 votes
#include <iostream>
#include <vector>

using std::vector;
using std::cout;
using std::endl;

int main()
{
	vector<int> vec{ 1, 3, 8, 23, 99, 12, 100, 7 };

	cout << vec.end()- vec.begin() << endl;
}


/*
run:

8

*/

 




answered Jan 19 by avibootz
0 votes
#include <iostream>
#include <vector>

using std::vector;
using std::cout;
using std::endl;

int main()
{
	vector<int> vec;

	for (int i = 2; i <= 8; i++) {
		vec.push_back(i);
	}

	cout << vec.end()- vec.begin() << endl;
}


/*
run:

7

*/

 




answered Jan 19 by avibootz
...