以标准格式打印名称

name = "John"
age = 25
print("My name is {} and I am {} years old.".format(name, age))

My name is John and I am 25 years old.

#include <stdio.h>

int main() {
    char* name = "John";
    int age = 25;
    printf("My name is %s and I am %d years old.\n", name, age);
    return 0;
}

My name is John and I am 25 years old.

public class Main {
    public static void main(String[] args) {
        String name = "John";
        int age = 25;
        System.out.printf("My name is %s and I am %d years old.\n", name, age);
    }
}

My name is John and I am 25 years old.