How to make an array return type from C function?

Question

I have tried to return the array name as shown below. Basically I am trying to make the function test return an array that can be used in main. Could you advise me as to what I need to read into more to find out how to perform a function like this?

#include <stdio.h>

int test(int size, int x){
    int factorFunction[size];    
    factorFunction[0] = 5 + x;
    factorFunction[1] = 7 + x;
    factorFunction[2] = 9 + x;
    return factorFunction;
}

int main(void){
    int factors[2];
    factors = test(2, 3);
    printf("%d", factors[1]);
    return 0;
}

I receive the compiler errors:

smallestMultiple.c:8: warning: return makes integer from pointer without a cast
smallestMultiple.c:8: warning: function returns address of local variable
smallestMultiple.c: In function ‘main’:
smallestMultiple.c:13: error: incompatible types in assignment

Answer 1

Functions can't return arrays in C.

However, they can return structs. And structs can contain arrays...