C primer plus(第六版）第七章答案

最新推荐文章于 2025-02-19 16:28:40 发布

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最新推荐文章于 2025-02-19 16:28:40 发布

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分类专栏： C 文章标签： C primer plus

本文链接：https://blog.youkuaiyun.com/weixin_45638291/article/details/103058805

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这是C Primer Plus第六版关于第七章的习题答案，详细解析了该章节的各项练习，帮助读者巩固C语言的知识点。

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C primer plus(第六版）第七章答案

/*   第一题    */
#include<stdio.h>
#define SPACE ' '
int main(void)
{
   
	int count_space = 0;
	int count_line_break = 0;
	int count_others = 0;
	int ch;
	
	printf("Please put in.\n");
	ch = getchar();
	while (ch != '#')
	{
   
		if (ch == SPACE)
			count_space++;
		else if (ch == '\n')
			count_line_break++;
		else
			count_others++;
		ch = getchar();
	}
	printf("count_space:%d  count_line_break:%d  count_others:%d",
			 count_space, count_line_break, count_others);
			 
	return 0;
}

/*    第二题    */
#include<stdio.h>
int main(void)
{
   
	int n = 1;
	char ch;
	
	while ((ch = getchar()) != '#')
	{
   
		putchar(ch);
		printf(" %d ",ch);
		if (n++ % 8 == 0)
		printf("\n");
	}
	
	return 0;
 }

/*    第三题   */
#include<stdio.h>
int main(void)
{
   
	int integer; 
	int count_odd = 0;    //奇数数
	int count_even = 0;   //偶数数 
	int sum_odd = 0;      //奇数和 
	int sum_even = 0;     //偶数和 
	double odd_avr = 0.0; //奇数平均值 
	double even_avr = 0.0;//偶数平均值 
	
	while (scanf("%d",&integer) == 1 && integer)
	{
   
		if (integer % 2 == 0)
		{
   	
			count_even++;
			sum_even += integer;
		}
		else
		{
   
			count_odd++;
			sum_odd += integer;
		}
	}
	if (count_even)
		even_avr = (double)sum_even / (double)count_even;
	if (count_odd)
		odd_avr = (double)sum_odd / (double)count_odd;
		
	printf("count_even:%d  even_average:%lf  even_sum:%d\n",count_even,even_avr,sum_even);
	printf("count_odd:%d  odd_average:%lf  odd_sum:%d\n",count_odd,odd_avr,sum_odd);
		
	return 0;
 }

/*   第四题   */
#include<stdio.h>
#include<stdlib.h>
int main(void)
{
   
	char ch;
	int n = 0;
	
	while ((ch = getchar()) != '#')
	{
   
		if (ch == '.')
		{
   
			ch = '!';
			putchar(ch)<