Get the first and last element from vector using begin() and end() - C++ STL

C++ examples for STL:vector

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Description

Get the first and last element from vector using begin() and end()

Demo Code

#include <iostream>
#include <vector>
using namespace std;
void show(const char *msg, vector<int> vect);
int main() {/*from w w w.ja v a 2 s. co m*/
   vector<int> v(10);
   for(unsigned i=0; i < v.size(); ++i)
      v[i] = i*i;
   show("Contents of v: ", v);
   cout << "The first and last element in v as"
   << " pointed to by begin() and end()-1:\n"
   << *v.begin() << ", " << *(v.end()-1) << "\n\n";
   return 0;
}
void show(const char *msg, vector<int> vect) {
   cout << msg;
   for(unsigned i=0; i < vect.size(); ++i)
      cout << vect[i] << " ";
   cout << "\n";
}

Result


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