C :

#include<stdio.h>
#include<string.h>
#include<ctype.h>

int main()
{
	int t,n,i;
	char a[200];
	scanf("%d%*c",&t);
	while(t--)
	{
		gets(a);
		for(n=i=0;i<strlen(a);i++)
		{
		    if(isalpha(a[i])&&n==0)
			{
				putchar(toupper(a[i]));
				n++;
			}
            if(!isalpha(a[i]))
				n=0;
		}
		printf("\n");
	}
	return 0;
}

C++ :

#include <iostream>
#include <string>
#include <cstring>
using namespace std;
char t(char c) {
    if (c >= 'a' && c <= 'z')
        return c - 32;
    else
        return c;
}
 
int main() {
    int T;
    cin >> T;
    getchar();
    for (int i = 0; i < T; ++i) {
        string line;
        getline(cin, line);
 
        string a;
        bool f = true;
 
        for (char c : line) {
            if (c == ' ') {
                f = true;
            } else if (f) {
                a += t(c);
                f = false;
            }
        }
 
        cout << a << endl;
    }
 
    return 0;
}

Java :

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int t = Integer.parseInt(in.nextLine());
		while(t-->0){
			String[] ss = in.nextLine().split(" ");
			StringBuffer sb = new StringBuffer();
			for(String s:ss)
				if(!s.equals(""))
					if(s.charAt(0)>'Z')sb.append((char)(s.charAt(0)-'a'+'A'));
					else sb.append((char)(s.charAt(0)));
			System.out.println(sb);
		}
	}

}