float* to float access violation

[drwbns]

Hi, I'm trying to do a simple conversion like so -

float *a;
*a = 5;
float b = *a; // access violation reading location 0x00000020


How can I do this properly?

[GCDEF]

a is uninitialized.

float f;
float* a = &f;

or

float* a = new float;

Then
*a = 5.0;