第二周实验（代码 截图 设计思路）

#include<iostream>
#include<cstdlib>
#include<ctime>
using namespace std;
#define random(x) (rand() % x)
int gcd(int a, int b)
{
      if (b == 0)return a;
	  else return gcd(b, a%b);
	
}
int main()
{
	  int n = 30, a, b, i, d, e, s, f, a1, b1, d1, e1;
	  char syb;
	  srand(time(NULL));
	  while (n--)
	  {
	   s = random(2);
       a = random(99); a++;
	   b = random(99); b++;
	   i = random(4);
	   if (s)
	  {                
       d = random(99); d++;
	   e = random(99); e++;
	   a %= b, d %= e;        
	   f = gcd(a, b); 
	   a /= f, b /= f;
	   f = gcd(d, e);
	   d /= f, e /= f;
	   a1 = a*e, b1 = b*e, d1 = b*d;
	   if (i == 0)
		  {        
			    a1 += d1; syb = '+';
				
		   }
	   else if (i == 1)
		  {
				 a1 -= d1; syb = '-';
				
		   }
	   else if (i == 2)
		   {
                 a1 = a*d; syb = '*';
				
		   }
		else if (i == 3)
		   {
               a1 = a*e;
		       b1 = b*d; syb = '/';
				
			}
		    f = gcd(abs(a1), b1);
		    a1 /= f, b1 /= f;
			cout << a << "/" << b << " " << syb << " " << d << "/" << e << " = " << a1 << "/" << b1 << endl;
			
		}
		 else
		 {
			 b1 = 0;
			 if (i == 0)
		     {
	          a1 = a + b; syb = '+';
			  }
			else if (i == 1)
			{
			  a1 = a - b; syb = '-';
			}
			else if (i == 2)
			{
		      a1 = a*b; syb = '*';
			}
			else if (i == 3)
			{
			  a1 = a / b;
			  b1 = a%b;
		      syb = '/';
			}
			cout << a << " " << syb << " " << b << " = " << a1;
			if (b1)cout << "+" << b1 << "/" << b;
			cout << endl;
			
		}
		
	}
	     return 0;
	
}

　　

转载于:https://www.cnblogs.com/lrhan/p/5269188.html