Std distance

// Calculates the number of elements between first and last.

#include <iterator>     									// std::distance
#include <vector>     										// std::vector
#include <algorithm>   							// Just if you use std::find

vector<int> arr = {2,5,3,8,1};
int size = std::distance(arr.begin(), arr.end()); 			// 5

auto it = std::find(arr.begin(), arr.end(), 8);
int position = std::distance(arr.begin(), it); 				// 3

Similar codes

1 vote306 views1 answer
Qtextedit no line break
C++
0 vote301 views1 answer
130 divided by -10
C++
0 vote313 views1 answer
Stringstream stream number to string
C++
0 vote340 views1 answer
Iterate const vector
C++
13 votes309 views4 answers
Stl sort in c++
C++
0 vote322 views1 answer
Use textchanged qt cpp
C++
-1 vote326 views1 answer
Can derived class access private members
C++
0 vote315 views1 answer
What c++ library is arccos in
C++
0 vote318 views1 answer
Access first value in a set c++
C++
0 vote307 views1 answer
Program in c++ for simple interest rate
C++