inputOutput.cpp

/*Problem statement
Write a program that takes a character as input and prints 1, 0, or -1 according to the following rules.

1, if the character is an uppercase alphabet (A - Z).
0, if the character is a lowercase alphabet (a - z).
-1, if the character is not an alphabet.

Example:
Input: The character is 'a'.
Output: 0
Explanation: The input character is lowercase, so our answer is 0.
Detailed explanation ( Input/output format, Notes, Images )
Sample Input 1 :
v
Sample Output 1 :
0
Explanation of Sample Input 1:
The input character is lowercase, so our answer is 0.
Sample Input 2 :
V
Sample Output 2 :
1
Explanation of Sample Input 2:
The input character is uppercase, so our answer is 1.
Sample Input 3 :
#
Sample Output 3 :
-1
Explanation of Sample Input 3:
The input character is not an alphabet, so our answer is -1.
Constraints :
The input can be any single character.
*/

#include<iostream>
using namespace std;

int main() {
	// Write your code here
	char x;
	cin>>x;
	if(char(65)<=x && x<=char(90))
    {
		cout<<"1"<<endl;
	}
	else if(char(97)<=x && x<=char(122))
    {
		cout<<"0"<<endl;
	}
	else 
    {
		cout<<"-1"<<endl;
	}
	return 0;
	
}