Question

How to subtract a value (N) from all valarray elements in C++

Answer 1

#include <iostream>
#include <valarray>

using std::cout;
using std::endl;
using std::valarray;

void print(valarray<int> va)
{
	for (int i = 0; i < va.size(); i++)
		cout << va[i] << " ";
	cout << endl;
}

int main()
{
	valarray<int> va = { 421, 22, 993, 34, 55, 98, 1 };
	
	va = va - 1;

	print(va);

	return 0;
}


/*
run:

420 21 992 33 54 97 0

*/

 

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