习题2.1 编写程序，输入x的值，根据该函数计算y的值

#include <stdio.h>int main(){int x, y;printf("请输入x的值：");scanf("%d", &x);if (x < 1)y = x;else if (x < 10)y = 2*x - 1;elsey = 3*x + 11;printf("x的值为：%d,y的值为:%dn", x, y);return 0;}