user=> (let [grade 85]
(cond
(>= grade 90) "A"
(>= grade 80) "B"
(>= grade 70) "C"
(>= grade 60) "D"
:else "F"))
"B"
user=> (let [grade 85]
(cond
(>= grade 90) "A"
(>= grade 80) "B"
(>= grade 70) "C"
(>= grade 60) "D"
:else "F"))
"B"
user=> (let [grade 85]
(cond
(> grade 90) "A"
(> grade 80) "B"
(> grade 70) "C"
(> grade 60) "D"
:else "F"))
"B"
(let [grade 85]
(cond
(> grade 90) "A"
(> grade 80) "B"
(> grade 70) "C"
(> grade 60) "D"
:else "F"))
;; returns "B"