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negate function in C++ STL
Negate function is used to negate the given values such that to change the sign of the values. It changes the negative values to positive and vice-versa.
Function prototype:
function transform(a_begin, a_end, a1_begin, negate()): a_begin = lower bound of the array. a_end = upper bound of the array. a1_end = Lower bound of the second modified array. negate() = to negate the values of the array.
Example Code
#include <algorithm>
#include <functional>
#include <iostream>
using namespace std;
int main() {
int a[] = { 4,6,7, -10, -20, -30 };
transform(a, a + 6, a, negate<int>());
for (int i = 0; i < 6; i++)
cout << a[i] << ' ';
return 0;
}Output
-4 -6 -7 10 20 30
Updated on: 30-Jul-2019
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