Cpp get last element of vector

Access last element in vector in c++

vector<int> v;
cout << v[v.size() - 1];
cout << *(v.end() - 1);
cout << *v.rbegin();
// all three of them work

Cpp get last element of vector

vector<int> vec;
vec.push_back(0);
vec.push_back(1);
int last_element = vec.back();
int also_last_element = vec[vec.size() - 1];

C++ get last element in array

#include<iostream>
/*To get the last element of the array we first get the size 
    of the array by using sizeof().  Unfortunately, this gives 
    us the size of the array in bytes.  To fix this, we divide
    the size (in bytes) by the size of the data type in the array.
    In our case, this would be int, so we divide sizeof(array) 
    by sizeof(int).  Since arrays  start from 0 and not 1 we 
    subtract one to get the last element.
    -yegor*/
int array[5] = { 1, 2, 3, 4, 5 };
printf("Last Element of Array: %d", array[(sizeof(array)/sizeof(int))-1]);

C++ access second last element of vector

arr2.rbegin()[1] // rbegin() is reverse order starting at 0 for last element, 1 for second-last

Source: stackoverflow.com

Similar codes

1 vote102 views1 answer
3d projection onto 2d plane algorithm
C++
36 votes92 views2 answers
Remove at index vector c++
C++
0 vote96 views1 answer
A variable with 2 independant variables plot
C++
0 vote111 views1 answer
Cpp loop through object
C++
0 vote112 views1 answer
Initialize 2d array c++ memset
C++
0 vote113 views1 answer
*= c++
C++
0 vote93 views1 answer
Memmove
C++
-1 vote107 views1 answer
Templates of templates c++
C++
1 vote111 views1 answer
Retourner pointeur de type qstringlist qt
C++
2 votes87 views2 answers
C++ sum the digits of an integer
C++