This C++ program illustrates the transform() algorithm. The program creates two vectors and transforms the third vector by inserting a value equal to an element from first vector raise to the power of element in second vector. The function power is passed as a predicate to the function transform().
Here is the source code of the C++ program which illustrates the transform() algorithm. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.
/*
* C++ Program to illustrate transform algorithm
*/
#include <iostream>
#include <algorithm>
#include <vector>
#include <functional>
#include <iterator>
#include <iomanip>
#include <cmath>
using namespace std;
typedef const vector <int>& vecref;
int power(int a, int b)
{
return pow(a, b);
}
void print(vecref a, vecref b, vecref c)
{
cout << "b[i] a[i] c[i]" << endl;
for(int i = 0; i < a.size(); i++)
{
cout << setw(2) << setfill(' ') << a[i] << " ^ "
<< setw(1) << setfill(' ') << b[i] << " = "
<< setw(2) << setfill(' ') << c[i] << endl;
}
}
int main()
{
vector <int> a(10), b(10), c(10);
for (int i = 0; i < 10 ;i++)
{
a[i] = (i % 2 + 1);
b[i] = (i % 3 + 1);
}
// Save the result in vector c
cout << "Transform operation" << endl;
transform(b.begin(), b.end(), a.begin(), c.begin(), power);
print(b, a, c);
}
$ a.out Transform operation b[i] a[i] c[i] 1 ^ 1 = 1 2 ^ 2 = 4 3 ^ 1 = 3 1 ^ 2 = 1 2 ^ 1 = 2 3 ^ 2 = 9 1 ^ 1 = 1 2 ^ 2 = 4 3 ^ 1 = 3 1 ^ 2 = 1
Sanfoundry Global Education & Learning Series – 1000 C++ Programs.
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