I do not understand these prefix and postfix. Especially how the postfix works. Can anyone help me

Answer 1

/*
Example is best way to understand so we will go through example😂😜..

prefix and postfix are work same till you are not store it any variable, or not in conditional statement.
eg. */
int a=0;
int c;
a++;

cout<<"A = "<<a<<endl;
/*it prints,
A = 1
*/
c=a++; /* at here the value of a is first store into variable and then increase by 1 so now value of c =1 and then a=2 done */

cout<<"C = "<<c<<" A= "<<a<<endl;
/*it will print C = 1 A = 2 */

a=4; //assign new value to a
c=++a; /* at here the value of a is first increase by 1 and then store into variable so now value of c = 5 and value of a = 5 ,too.*/
cout<<" C = "<< c<<endl;

/* And you can copy this and check by put in on main 😂*/

Answer 2

a=0;
b=2;
cout<<(a++)*b;//outputs 0 the variable a is incremented by one after the operation

a=0;
b=2;
cout<<(++a)*b;//outputs 2 the variable a is incremented by one before the operation