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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main () {
  5.  
  6.    /* an array with 5 rows and 2 columns*/
  7.    int a[5][2] = { {0,1}, {2,3}, {4,5}, {6,7},{8,9}};
  8.    int i, j;
  9.  	int value = 6;
  10.    /* output each array element's value */
  11.    for(i=0; i < 5; i++)
  12.    {
  13.    	if (a[i][0] <= value && value <= a[i][1])
  14.    	{	cout << a[i][0] << a[i][1] << "In if"; 
  15.    		break;
  16.    	}
  17.    }
  18.    	if (i >= 5)
  19.    		cout << "Elemet not present";
  20.  
  21.    	else
  22.    	{
  23.    		cout << "'Element is present at" << i;
  24.    		int start = i*2+1;
  25. 		int end = start + 2;
  26.  
  27. 		while (start <= end)
  28. 		{
  29. 			int midle = (start + end) / 2;
  30.  
  31. 			int row = midle / 2;
  32. 			int col = midle % 2;
  33.  
  34. 			if (a[row-1][col] == value)
  35. 			{cout << "found element" << a[row-1][col];
  36. 				return 0;}
  37. 			if (a[row-1][col] < value)
  38. 				start = midle + 1;
  39. 			else
  40. 			start = midle - 1;
  41. 	}
  42.    	}
  43.    return 0;
  44. }
Success #stdin #stdout 0s 3468KB
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Standard input is empty
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67In if'Element is present at3found element6
https://ideone.com/xwXfB0
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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