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c++arraysdeclaration
MaT4X
MaT4X

Reputation: 35

Assign value to the first m elements of an array of size n in C++

I have an array declared in the global scope (outside the main() function) of size n, and inside the main() I need to assign it the first m (m < n) values. How do I approach this?

#include <iostream>
using namespace std;

int array[50];

int main()
{
    array = {1,2,3,4,5};  //can not execute, error
    return 0;
}

The error I am getting:

assigning to an array from an initializer list

Upvotes: 3

Views: 896

Answers (1)

Suspicio
Suspicio

Reputation: 341

If you are trying to initialize the array with some initial values, you have to do this immediately with the initialization, not after the initialization.

#include <iostream>
using namespace std;
int main(){
   int array[50] = {1,2,3,4,5};
   return 0;
}

But, if you really need to copy values, the easiest way is to copy values one by one.

#include <iostream>
using namespace std;
int array[50];

int main(){
   int temp[5] = {1,2,3,4,5};
   for (int i = 0; i < 5; i++) 
       array[i] = temp[i];
   return 0;
}

Upvotes: 5

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