实验1

#include <stdio.h>
int main()
{
	char ans1,ans2;
	
	printf("每次课前认真预习，课后及时复习了没？（输入y或Y表示有，输入n或N表示没有）：");
	ans1 = getchar();
	
	getchar();
	
	printf("\n动手敲代码实践了没？（输入y或Y表示有，输入n或N表示木有敲）:");
	ans2 = getchar();
	
	if(ans1 == 'y'||ans1=='Y' && ans2 == 'y'||ans2=='Y')
	   printf("\n罗马不是一天建成的，继续保持哦:)\n");
	else
	   printf("\n罗马不是一天毁灭的，我们来建设吧\n");
	   
	   return 0;
}

#include <stdio.h>

int main()
{
	double x,y;
	char c1,c2,c3;
	int a1,a2,a3;
	
	scanf("%d%d%d",&a1,&a2,&a3);
	printf("a1 = %d,a2 = %d,a3 = %d\n",a1,a2,a3);
	
	scanf("%c%c%c",&c1,&c2,&c3);
	printf("c1 = %c,c2 = %c,c3 = %c\n",c1,c2,c3);
	
	scanf("%lf%lf",&x,&y);
	printf("x = %f, y = %lf\n",x,y);
	
	return 0;
}

#include <stdio.h>

int main()
{
	int year;
	int second;
	second=1000000000;
	
	year=second/60/60/24/365;
	year=(int)(year+0.5);
	
	printf("10亿秒约等于%d年\n",year);
	return 0;
}

#include <stdio.h>
#include <math.h>

int main()
{
	double x,ans;
	
	while(scanf("%lf",&x)!=EOF)
	{
		ans=pow(x,365);
	printf("%.2f的365次方:%.2f\n",x,ans);
	printf("\n");
	}

	return 0;
}

int main()
{
	double c;
	double f;
	
	while(scanf("%lf",&c)!=EOF)
	{
		f = 9.0 / 5.0 * c + 32.0;
		printf("摄氏度c = %.2lf时,华氏度f =%.2lf\n",c,f);
		printf("\n");
	}
	
	return 0;
}

#include<stdio.h>
#include<math.h>
int main()
{
	double a,b,c;
	double s;
	double area;
	
	while(scanf("%lf%lf%lf",&a,&b,&c)!=EOF)
	{
		s=(a+b+c)/2;
		area=sqrt(s*(s-a)*(s-b)*(s-c));
		printf("a = %d,b = %d,c = %d,area = %.3lf\n",(int)a,(int)b,(int)c,area);
		printf("\n");
	}
	
	return 0;
}