Computer scienceProgramming languagesKotlinTypes and data structuresBasic operations

Characters. Char type

Theory

Previous character

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Write a program that reads four characters and prints the previous character in the Unicode table for each of them.

Sample Input 1: 

b
c
d
e

Sample Output 1: 

a
b
c
d
Write a program in Kotlin
fun main() {
// write your code here
}
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