transform c++
// A C++ program uses transform() in STL to add
// 1 to all elements of arr[]
#include <bits/stdc++.h>
using namespace std;
int increment(int x) { return (x+1); }
int main()
{
int arr[] = {1, 2, 3, 4, 5};
int n = sizeof(arr)/sizeof(arr[0]);
// Apply increment to all elements of
// arr[] and store the modified elements
// back in arr[]
transform(arr, arr+n, arr, increment);
for (int i=0; i<n; i++)
cout << arr[i] <<" ";
return 0;
}