C Primer Plus第六版第二章编程练习答案

//Listing 2-1 print_name
#include <stdio.h>
int main(void)
{
	printf("Gustav Mahler\n");
	printf("Gustav\n");
	printf("Mahler\n");
	printf("Gustav");
	printf(" Mahler\n");
	
	return 0;
}

//Listing 2-2 print_name_address
#include <stdio.h>
int main(void)
{
	printf("my name is:\"Sherlock·Holmes \"\n");
	printf("you can find me at: No.211b Baker Street\n");

	return 0;
}

/*Listing 2-3 age_day*/
#define AGE 18
#include <stdio.h>
int main(void)
{
	printf("my age is:%d\n", AGE);
	printf("convert to day is:%d\n", 18*365);
	
	return 0;
}

//Listing 2-4 easy_function
#include <stdio.h>
int main(void)
{
	jolly();
	jolly();
	jolly();
	deny();
	
	return 0;
}
void jolly(void)
{
	printf("For he's jolly good fellow!\n");
}
void deny(void)
{
	printf("Which nobody can deny!");
}

//Listing 2-5 easy_function2
#include <stdio.h>
int main(void)
{
	br();
	printf(" ,");
	ic();
	printf("\n");
	ic();
	printf(",\n");
	br();
		
	return 0;	
}
void br()
{
	printf("Brazil, Russia");
}
void ic()
{
	printf("India, China");
}

//Listing 2-6 toes
#include <stdio.h>
int main(void)
{
	int toes = 10;
	printf("Original \t Square \t cube\n");
	printf("%d \t         %d \t         %d \t", toes, toes*toes, toes*toes*toes);
	
	return 0;
}

//Listing 2-7 smile
#include <stdio.h>
int main(void)
{
	for(int i = 0;i < 3;i++)
	{
		for(int j = 3-i;j > 0;j--)
		{
			smile();
		}
		printf("\n");
	}
	return 0;
}
void smile()
{
	printf("Smile!");
}

//Listing 2-8 one_two_three
#include <stdio.h>
void one_three();
void two();
int main(void)
{	
	printf("starting now:\n");
	one_three();
	printf("down!\n");

	return 0;
}
void one_three()
{	
	printf("one\n");
	two();
	printf("three\n");
}
void two()
{	
	printf("two\n");	
}