Why are programming languages the way they are?

Question

How come statements usually end with semicolon? Why are there curly braces around blocks of code? Why do we write && or || and not just & or |?
Did all this syntax develop out of necessity or were there specific reasons behind these choices?

Answer 1

they were just to be logical indicators. you could use any symbols you want when creating a language but its best to use things that are easy to remember and have some logic