c语言根据用户输入的出生年份并计算出当前年龄

#include <stdio.h>
#define CURRENTYEAR 2023

int main()
{
    int yearBorn, age;
    printf("What year were you born?\n");
    scanf(" %d", &yearBorn);

    if (yearBorn > CURRENTYEAR){
        printf("wrong input!\n");
        printf("What year were you born?\n");
        scanf(" %d", &yearBorn);
    }

    age = CURRENTYEAR - yearBorn;
    printf("\nSo this year you will turn %d on your birthday!\n",age);

    if ((yearBorn % 4) == 0){
        printf("\nYou were born in a Leap Year--cool!\n");
    }
    return 0;
}

#include<stdio.h>
int main()
{
    int y0,m0,d0;
    int y1,m1,d1;
    int y,m,d;
    printf("请输入学生的生日(年：y0.月：m0.日：d0)\n");
    printf("请输入当前日期(年：y0.月：m0.日：d0)\n");
    scanf("%d%d%d",&y0,&m0,&d0);
    scanf("%d%d%d",&y1,&m1,&d1);
    if(d1<d0)
        {
            m1--;//m1=m1-1,m1-=1
            switch(m1)
            {
            case 2:d=d1+28-d0;break;
            case 4:d=d1+30-d0;break;
            case 6:d=d1+30-d0;break;
            case 9:d=d1+30-d0;break;
            case 11:d=d1+30-d0;break;
            }
        }
    else
            d=d1-d0;
    if(m1<m0)
        {
        y1--;
        m=m1+12-m0;
        }
    else
        {
        m=m1-m0;
        y=y1-y0;
        }

printf("实际年龄为：年=%d,月=%d,日=%d",y,m,d);
return 0;
}

#include<stdio.h>                        //定义了三个变量类型、一些宏和各种函数来执行输入和输出

int main() {
    int year, month, day, newyear, newmonth, newday, wang;                        //定义出生和当前的年、月、日
    printf("请输入生日(包含年月日，请用空格隔开)：\n");
    scanf_s("%d %d %d", &year, &month, &day);
    printf("请输入当前日期(包含年月日，请用空格隔开)：\n");
    scanf_s("%d %d %d", &newyear, &newmonth, &newday);
    wang = newyear - year;                        //用当前年份减去出生年份，并赋值给wang
    if (newmonth - month > 0) {                    //如果出生月份大于当前月份，则直接输出
        printf("当前年龄为：\n");
        printf("%d\n", wang);
    }
    else {
        if (newmonth - month == 0) {            //如果月份相减等于0，则执行日的判断
            if (newday >= day) {                //如果当前日大于出生的日，则输出
                printf("当前年龄为：\n");
                printf("%d\n", wang);
            }
            else {
                printf("当前年龄为：\n");
                printf("%d\n", wang - 1);        //如果日期相减条件为假，则wang减去1
            }
        }
        else {
            printf("当前年龄为：\n");
            printf("%d\n", wang - 1);            //如果月份相减条件为假，则wang减去1
        }
    }
    return 0;
}