C++ Exercises, Practice and Solution: Write a program in C++ to display the operation of pre and post increment and decrement. output: It is denoted as “++” or “–” symbol. printf(“Enter a positive integer xn”); a++; An expression that uses an increment or decrement operator is a statement itself. Exercise 3: int x=1, y=2, z=3; printf ("\n%d", x++ * ++y % ++z); Ans: 3. This question is very strong way to evaluate your idea about the increment/decrement unary operator in C. Being the most efficient way of increasing or decreasing a value, these operators are abandon in almost every piece of code. Operator Example Same As = x = y: x = y += x += y: x = x + y-= x -= y: x = x - y *= x *= y: x = x * y /= x /= y: x = x / y %= x %= y: x = x % y **= x **= y: x = x … printf(“your answer is %d”,x+=y); Increment and Decrement Operators. Increment and Decrement Operators You’ll often find yourself needing to manipulate the value in a variable, and then store that result back in the original variable. Thank you in advance Exercise: Declare a variable named countdown and assign it the value of 10. There are two variants of increment/decrement operator prefix and postfix. cout<<"The value of a after a++ "<