计算导论与程序设计实验1

#include<iostream>
int main()
{
	double a=5;
	double b=1;
	double c;
	double result;
	for(int i=0;i<3;i++)
	{
		c=1/a;
		result=b+c;
		a=result;
	}
	printf("%f",result); 
	return result;
 } 

#include<iostream>
#include<math.h>
int main()
{
	int a=3;
	int b=4;
	double y=sqrt(a*a+b*b);
	printf("%f",y);
	return 0;
}

#include<iostream>
#include<math.h>
#define PI 3.1415926
int main()
{
	double a=PI/4;
	double y=sin(a)*sin(a)+sin(a)*cos(a)-cos(a)*cos(a);
	printf("%f",y);
	return 0; 
}

#include<iostream>
#include<math.h>
#define PI 3.1415926
int main()
{
	double a=log(3);
	double b=log(2);
	double c=PI/3;
	double y=(log(5*a)-b)/sin(c);
	printf("%f",y);
	return 0;
 } 

#include<iostream>
#include<math.h>
int main()
{
	double a=(3/4+103)%3;
	printf("%f",a);
	return 0;
 } 
  	//	两个数进行取余只能是两个整数，所以a=0.75+103  y=a%3是错误的