[in regards to C++)

Write a function that computes the weekday of a given date, using a formula known as Zeller's congruence. Let d the day of the month mm- the modified month (3 March, , 12 December, 13Jnuary, 14 - February) w- the weekday (0 Monday, 1-Tuesday,..,6Sunday) Then w=(d+5+( 26 (mm + 1)) . 5 (year % 100) , 21x (year/ 100) %7 4 Here, all / denote integer division and % denotes the remainder operation