Capitalize Each Word

const s = "hello world foo";
const result = s.split(" ").map(w =>
  w.charAt(0).toUpperCase() + w.slice(1)
).join(" ");
console.log(result);

public class Main {
    public static void main(String[] args) {
        String s = "hello world foo";
        String[] words = s.split(" ");
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < words.length; i++) {
            String w = words[i];
            sb.append(Character.toUpperCase(w.charAt(0))).append(w.substring(1));
            if (i < words.length - 1) sb.append(" ");
        }
        System.out.println(sb.toString());
    }
}

fun main() {
    val s = "hello world foo"
    val result = s.split(" ").joinToString(" ") {
        it.replaceFirstChar { c -> c.uppercase() }
    }
    println(result)
}

let s = "hello world foo"
let result = s.split(separator: " ").map { word -> String in
    return word.prefix(1).uppercased() + word.dropFirst()
}.joined(separator: " ")
print(result)

void main() {
  String s = 'hello world foo';
  List<String> words = s.split(' ');
  String result = words.map((w) {
    return w[0].toUpperCase() + w.substring(1);
  }).join(' ');
  print(result);
}

#include <iostream>
#include <cctype>
using namespace std;

int main() {
    string s = "hello world foo";
    bool capitalize = true;
    for (char &c : s) {
        if (c == ' ') {
            capitalize = true;
        } else if (capitalize) {
            c = toupper(c);
            capitalize = false;
        }
    }
    cout << s << endl;
    return 0;
}

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

int main() {
    char s[] = "hello world foo";
    int capitalize = 1;
    for (int i = 0; s[i]; i++) {
        if (s[i] == ' ') {
            capitalize = 1;
        } else if (capitalize) {
            s[i] = toupper(s[i]);
            capitalize = 0;
        }
    }
    printf("%s\n", s);
    return 0;
}