- #1
okkvlt
- 53
- 0
in the c++ programming language, how do i make a function return an array?
#include <iostream>
#include <cmath>
using namespace std;
double *roots (double *x, int n)
{
for (int k = 0; k < n; ++k)
x[k] = sqrt(k);
return x;
}
int main ()
{
double numbers[5];
double *sqrts;
sqrts = roots (numbers, 5);
for (int k = 0; k < 5; ++k)
cout << sqrts[k] << endl;
return 0;
}
#include <iostream>
#include <cmath>
using namespace std;
void roots (double *x, int n)
{
for (int k = 0; k < n; ++k)
x[k] = sqrt(k);
}
int main ()
{
double numbers[5];
roots (numbers, 5);
for (int k = 0; k < 5; ++k)
cout << numbers[k] << endl;
return 0;
}
#include <iostream>
#include <cmath>
using namespace std;
double *roots (int n)
{
double *x = new double[n];
for (int k = 0; k < n; ++k)
x[k] = sqrt(k);
return x;
}
int main ()
{
double *sqrts;
sqrts = roots (5);
for (int k = 0; k < 5; ++k)
cout << sqrts[k] << endl;
delete[] sqrts;
return 0;
}
#include <iostream>
#include <cmath>
#include <vector>
using namespace std;
vector<double> roots (int n)
{
vector<double> x(n);
for (int k = 0; k < n; ++k)
x[k] = sqrt(k);
return x;
}
int main ()
{
vector<double> sqrts;
sqrts = roots (5);
for (int k = 0; k < 5; ++k)
cout << sqrts[k] << endl;
return 0;
}
To create a function that returns an array in JavaScript, you can use the return
keyword followed by the array you want to return. For example, function myFunction() { return [1, 2, 3]; }
will return an array with the values 1, 2, and 3 when called.
Yes, a function can return multiple arrays in JavaScript by using the return
keyword followed by multiple arrays separated by commas. For example, function myFunction() { return [1, 2], [3, 4]; }
will return two arrays with the values 1 and 2, and 3 and 4 respectively.
To access the elements of an array returned by a function, you can use the index notation to specify which element you want to access. For example, myFunction()[0]
will access the first element of the array returned by the myFunction()
function.
Yes, you can pass arguments into a function that returns an array by adding parameters to the function declaration and using those parameters to manipulate the array before returning it. For example, function myFunction(param1, param2) { return [param1, param2]; }
will return an array with the values of param1
and param2
.
To handle errors when returning an array from a function, you can use the try...catch
statement to catch any errors that may occur during the execution of the function. Additionally, you can use throw
to manually throw an error if needed.