title: What makes a C/C++ program 32/64 bit?
body: <p>I have written many programs since i learned to program about a year ago.I never could understand why i have to download separate programs for my 32 and 64 bit machines. When i write a program on one 32 bit machine it runs on my 64 bit machine. So my question what can you do in C/C++ that defines the bit type of the program?</p>