C :

#include<stdio.h>
int main()
{
	int a;
	scanf("%d",&a);
	printf("%d",a%10+a/100);
	return 0;
}

C++ :

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	cin>>n;
	cout<<n/100+n%10;
}

Java :

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int g = x % 10;
		int s = x / 10 % 10;
		int b = x / 100;
		int sum = g + b;
		System.out.println(sum);
	}
}

Python :

a=int(input())
b=a//100
c=a%10
print(b+c)