What am I getting wrong on malloc and realloc understanding? - c

Question

I was trying to make an array that would resize whilst the program is running. I have come to knowledge of malloc and realloc functions but it seems I'm getting something wrong apparently. Here's the function that I wrote that creates an array based on how many cycles is the loop making.
int* flexibleArray() {
int *arrayFlex = NULL;
int number=0, cnt=0;
while (number!=-1) {
printf("\nInsert the variable: ");
scanf("%d", &number);
if (number==-1){
break;
}
cnt+=1;
arrayFlex = realloc(arrayFlex, cnt * sizeof(int));
arrayFlex[cnt-1] = number;
}
return arrayFlex;
}
I tried to read the documentation I found on the internet about it, I can't then retrieve the new array after the reallocation.
int *array;
array = flexibleArray();
int arraySize = (sizeof(array))/(sizeof(int));
for(int i=0; i<arraySize; i++) {
printf("%d ", array[i]);
}
basically this is where I'm testing the function to see if it does what it should.
I'm new to C, sorry guys.
Thanks

Answer 1

Something like this should do it.
int* flexibleArray() {
int *arrayFlex = NULL; // needs to be a pointer
int number=0, cnt=0;
while (number!=-1) {
printf("\nInsert the variable: ");
scanf("%d", &number);
if (number==-1){
break;
}
cnt+=1;
arrayFlex = realloc(arrayFlex, cnt * sizeof(int));
arrayFlex[cnt-1] = number;
}
return arrayFlex;
}
EDIT: fixed typos.