A student's letter grade is calculated accordi ng to the following schedule. Write a C progr am that accepts a student's numerical grad $e$ e$,$ converts the numerical grade to an equival ent letter grade, and displays the letter grad e$.$

$\backslash$table$[[$Numerical Grade,Letter Grade$],[$greater than or equal to $90,$A$],[$less than $90$ but greater than or equal to $80,$B$],[$less than $80$ but greater than or equal to $70,$C$],[$less than $70$ but greater than or equal to $60,$D$],[$less than $60,$F$]]$

Please submit the source code numtoletter.c file as an attachment and the screenshot of program and output wi ndow