#include<stdio.h>
age(int n)／*这是这个函数调用原理不懂每次到这里我就掐壳了*／
{
    int c;
     if (n == 1)
        c = 10;
    else
        c = age(n - 1) + 2;／*这里是怎么执行的*／
        printf("%d\n",c);
    return (c);
}

int main()
{
    printf("%d", age(5));
}