5. Analyze the following code: int a; int i=5; a=++i; System.out.println("a= "+a+" i= "+i); i=5; a=1++; System.out.println("a= "+a+" i= "+i); i=5; a=1++ +i; System.out.println("a= "+a+" i "+i); i=5; a=++i+i; System.out.println("a= "+a+" i= "+i); a) What is the output displayed on screen for each calculation? b) Provide an explanation for each case, justifying the values obtained.