Exercise[6B(g)],Let Us C Solution

 Exercise[6B(g)]

Ramanujan number is the smallest number that can be  expressed as
sum of two cubes in two different ways.Write a  program to print
all such numbers up to a  reasonable limit.       */
#include<stdio.h>
int  main()
{
	int i,num,x,y,count;
	num=30000;
	// for loop for range(1-30000)
	for(i=1;i<=num;i++)
	{
		count=0;
		for(x=1;x*x*x<i;x++)
		{
			  // for-loop for finding Ramanujan number
			for(y=x;x*x*x+y*y*y<=i;y++)
			{
				 // list all numbers
				 if(x*x*x+y*y*y==i)
				 {
				 	count ++;
				 }
			}
		}
	}
	if(count==2)
	{
		printf("%d\n",i);
	}
	return 0;
}