Write a C$++$ program that does the following:

j$.$ Create a C$++$ file with the name lab$13\_2.$cpp$.$

k$.$ Write the function swapFirstLetters which has two strings as parameters permanently swapping the first

character of the two strings.

l$.$ Write the function longestString which has two strings as parameters printing the longer string and

returning the length of the longer string. If both strings are equal length, then use either string.

m$.$ Write the function repeatHello which has an integer as a parameter printing the string $$Hello$$ the times

equal to repeatHello$$s parameter.

n$.$ Write the main function that does the following:

i$.$ Prompt the user for their first name and last name.

ii$.$ Call the function swapFirstLetters passing into it those two strings.

iii. Print the two modified names.

iv$.$ Call the function longestString passing into it those two strings.

v$.$ Call the function repeatHello passing into it the length returned by longestString.

Sample run of the program:

Please enter your first name: Dave

Please enter your last name: Miller

Your new first name is Mave

Your new last name is Diller

Diller is the longest string.

HelloHelloHelloHelloHelloHello