C Primer Plus chap 2 编程练习

test1

#include<stdio.h>
int main(void)
{
    printf("Liang Xi\n");
    printf("Liang\nXi\n");
    printf("Liang ");
    printf("Xi\n");
    return 0;
}

test2

#include<stdio.h>
int main(void)
{
	printf("我的姓名是某某\n");
	printf("我的地址是浙江省\n");
	return 0;
}

test3

#include<stdio.h>
#define _CRT_SECURE_NO_WARNINGS
int main(void)
{
	int years=0, days=0;
	printf("请输入您的年龄（岁）\n");
	scanf_s("%d", &years);
	days = 365 * years;
	printf("您的年龄转化为天数为：%d",days);
	return 0;
}

test4

#include<stdio.h>
void jolly(void);
void deny(void);

int main(void)
{
	jolly();
	jolly();
	jolly();
	deny();
	return 0;
}

void jolly(void)
{
	printf("For he's a jolly good fellow!\n");
}
void deny(void)
{
	printf("which nobody can deny!\n");
}

test5

#include<stdio.h>
void br(void);
void ic(void);

int main(void)
{
	br();
	printf(",");
	ic();
	printf("\n");
	ic();
	printf(",\n");
	br();
	return 0;
}

void br(void)
{
	printf("Brazil,Russia");
}
void ic(void)
{
	printf("India,China");
}

test6

#include<stdio.h>
int main(void)
{
	int tose = 10;
	printf("tose的值为:%d\ntose的两倍为:%d\ntose的平方为:%d\n", 
          tose, 2 * tose, tose * tose);
	return 0;
}

test7

#include<stdio.h>
void sm(void);

int main(void)
{
	for (int a = 3; a > 0; a--)
		sm();	
		printf("\n");
	for (int a = 2; a > 0; a--)
		sm();
		printf("\n");
	for (int a = 1; a > 0; a--)
		sm();
		printf("\n");
	return 0;
}

void sm(void)
{
	printf("Smile!");
}

test8

#include<stdio.h>
void one_three(void);
void two(void);

int main(void)
{
	printf("starting now:\n");
	one_three();
	printf("done!\n");
	return 0;
}

void one_three(void)
{
	printf("one\n");
	two();
	printf("three\n");
}
void two(void)
{
	printf("two\n");
}