Program to swap $2$ values of two variables entered by user without using third variable.

Program to find the largest number between two values entered by user.

Write a program that assign the ticket price based on age $($child$,$ adult, senior$).$

Child age should be less than equal to $12$

Senior citizen should be greater than equal to $60$ whereas greater than $12$ and less than $60$ should fall under adult.

Initialize ticket price of child, adult, citizen to $10\mathrm{.}0,20\mathrm{.}0,15\mathrm{.}0.$

Write a program that takes three numbers as input and prints the maximum using nested if$-$else statements and if$-$else$-$if statements.