#include <stdio.h>

int peopleage(n)

{

    int age;

    if(n==1)

    age=10;

    else

        age=peopleage(n-1)+2;

    return age;

}

int main()

{

    int  peopleage(5);

    printf("第5个人的年龄是%d岁",peopleage(5));

    return 0;

}