跨函数连接字符串

// 使用字符串拼接操作符
var str1 = 'Hello';
var str2 = 'World';
var result = str1 + ', ' + str2;
console.log(result); // 输出：Hello, World

// 使用模板字符串
var name = 'John';
var age = 25;
var sentence = `My name is ${name} and I am ${age} years old.`;
console.log(sentence); // 输出：My name is John and I am 25 years old.

# 使用加号连接字符串
str1 = 'Hello'
str2 = 'World'
result = str1 + ', ' + str2
print(result)  # 输出：Hello, World

# 使用格式化字符串
name = 'John'
age = 25
sentence = f"My name is {name} and I am {age} years old."
print(sentence)  # 输出：My name is John and I am 25 years old.

// 使用加号连接字符串
String str1 = "Hello";
String str2 = "World";
String result = str1 + ", " + str2;
System.out.println(result);  // 输出：Hello, World

// 使用StringBuilder
String name = "John";
int age = 25;
StringBuilder sentence = new StringBuilder();
sentence.append("My name is ").append(name).append(" and I am ").append(age).append(" years old.");
System.out.println(sentence.toString());  // 输出：My name is John and I am 25 years old.