// Write a function that takes the 2-D matrix and populates an array
// that contains the 2nd smallest element of each row. Print this array.
// Author:rahule@iitk.ac.in

#include<stdio.h>
int op[4];		//aglobal array to store output
void second_min(int a[4][4]);	//function to calculate second min array
main()
{
  int a[4][4],i,j;
  printf("\nEnter the 4x4 matrix:");	//entering the array
  for(i=0;i<4;i++)
    for(j=0;j<4;j++)
    {
      printf("\n(%d,%d) :",i,j);
      scanf("%d",&a[i][j]);
    }
    
  second_min(a);		//calling function to calculate the output.The output is stored in the global array
  
  printf("\nThe second minimum array is :");		//required output stored in global array is being printed
  for(i=0;i<4;i++)
    printf("%d  ",op[i]);
}

void second_min(int a[4][4])
{
  int i,j,sec_min,first_min;
  for(i=0;i<4;i++)
  {
    sec_min=a[i][0];		//initialilze first_min and second min as initial element of the row
    first_min=a[i][0];
    for(j=0;j<4;j++)
    {
      if(a[i][j]<first_min)	//if we finds an element in the row that is smaller than the first_min,then make second min as earlier first min \
				//and make first_min as the new element found	
      {
	sec_min=first_min;
	first_min=a[i][j];
      }
      else if(a[i][j]<sec_min)	//if the new element is smaller than the second_min but larger than the first_min,then make it as new sec_min
      {
	sec_min=a[i][j];
      }
    }
    op[i]=sec_min;		//store the second_min in the global array 
  }
}