Answer 1

writing just x-- as a statement will result in x being 4.
x--; // x now equals 4.
however, writing x-- in a print statement or assignment of another variable, gives a value of 5 first, then changes to 4 after the Operation is complete.
print(x--); // prints out 5, then x becomes 4
a = x-- // a = 5 and x = 4