Write a flowchart and C code for a program that does the following:Asks a user the number of years of employment serviceUses an else...if statement to display the following messagesService greater than $25$ years You receive a gold watchService greater than $15$ but less than $25$ years You receive a silver penService greater than $5$ but less than $15$ years You receive an attractive pinService between $0$ and $5$ years You receive a pat on the back