Question

How to create an array containing a range of numbers in C++

Answer 1

#include <iostream>
#include <memory> //unique_ptr

std::unique_ptr<int[]> createRangeArray(int start, int end) {
    int size = end - start + 1;
    
    std::unique_ptr<int[]> arr(new int[size]);
    for (int i = 0; i < size; ++i) {
        arr[i] = start + i;
    }
    
    return arr;
}

int main() {
    int start = 3;
    int end = 11;
    std::unique_ptr<int[]> rangeArray = createRangeArray(start, end);
    int size = end - start + 1;

    for (int i = 0; i < size; ++i) {
        std::cout << rangeArray[i] << " ";
    }
}



/*
run:

3 4 5 6 7 8 9 10 11 

*/

 

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