Converting byte array to number?

Question

Pascal

Hello! I have the Pascal language - a prerequisite and task is to read the file. There are 4 specific bytes in the file. I wrote them into an array of bytes. How can I cast these 4 bytes to a numeric variable (of type longint, I guess)? Thanks in advance

Answer 1

By simple mathematical calculations:
a + b * 256 + c * 65536 + d * 16777216
In general, a bitwise shift is used for these purposes: shlandshr