# Thread: Having trouble multiplying these arrays...

1. ## Having trouble multiplying these arrays...

This is really the only segment of code that matters

Code:
```for (i=0; i<length; i++) {
for (c=0; c<length; c++) {
product[i] = a[i]*a[c];
}
}```
I'm trying to multiply the arrays by each other (for example if the array a is [4,6,8] and array b is [5, 7,9] then I want the product array to = [4x5, 6x7, 8x9])
But it is multiplying them some other way and when I try to do it by hand I only get the answer I think is right , not the one the computer gives. If the rest of the program would help I can post that too thanks.

2. Originally Posted by UCFuser
This is really the only segment of code that matters

Code:
```for (i=0; i<length; i++) {
for (c=0; c<length; c++) {
product[i] = a[i]*a[c];
}
}```
I'm trying to multiply the arrays by each other (for example if the array a is [4,6,8] and array b is [5, 7,9] then I want the product array to = [4x5, 6x7, 8x9])
But it is multiplying them some other way and when I try to do it by hand I only get the answer I think is right , not the one the computer gives. If the rest of the program would help I can post that too thanks.

Code:
```for (i=0; i<length; i++)
product[i] = a[i]*b[i];```

3. Haha well I guess that was pretty simple thanks

4. Originally Posted by UCFuser
Haha well I guess that was pretty simple thanks
The really cool stuff usually is....