Array Problem

[FedericDeLoitte]

I made a function containing an array that is declared as so: factor[ g + 1] and when the computer runs it, results in this: factor[-1]. Why?
Heres my source code:

bool PerfectCalculator(int g)
{
bool x;
int i, factor[g + 1], sum;

x = false;
sum = 0;

for (i=2; i {
if (g % i == 0) {
factor = i;
}
else {
factor = 0;
}

}

for (i=0; i {
sum += factor;
}

if (sum == g) {
x = true;
}
else {
x = false;
}

return x;

}

[GWILouisaxwzkla]

Unless theres a new C++ standard , you cannot declare arrays of an arbitrary length ( the length must be declared as a constant so the compiler knows how to set up the function’s stack frame at compile time ). So you can’t do this ( I’m suprised this compiled, what compiler are you using ?):

<br /> int array [ g + 1 ];<br />

1 2 3

<br /> int array  [ g + 1 ];<br />

If you want a arbitrary length array you have to allocate it at run time , like:

<br /> int * array = new int [ g + 1 ];<br />

1 2 3

<br /> int * array = new int [ g + 1 ];<br />

make sure to check allocation of this statement and delete the memory when your done with it ( by the end of the function call )………

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