Min Max find program 2d-array using function | C Language

Q : Write a function fnmat() which takes matrix, m, n as arguments where matrix is of size mXn with m as rows and n as columns. Function should return the maximum and minimum elements of the matrix. Elements of matrix are of integer type.

Answer : 

#include<stdio.h>

#include<conio.h>

#define ROW 5

#define COL 5

/*============================

     Girfa Student Help

     Find max,min 2d-array using function

==============================*/

void fnmat(int ar[ROW][COL],int,int);

void main()

{

     int ar[ROW][COL],r,c,i,j;

     clrscr();

     printf("Enter row & columns for array entry>> ");

     scanf("%d%d",&r,&c);

     if(r>ROW)

           printf("Given row is greater than row capacity of %d",ROW);

     else if(c>COL)

           printf("Given column is greater than column capacity of %d",COL);

     else

     {

           for(i=0;i<r;i++)

           {

                for(j=0;j<c;j++)

                {

                     printf("Enter number for ar[%d][%d]>> ",i+1,j+1);

                     scanf("%d",&ar[i][j]);

                }

           }

           clrscr();

           /* Printing array */

           for(i=0;i<r;i++)

           {

                for(j=0;j<c;j++)

                     printf("\t%d",ar[i][j]);

                printf("\n");

           }

           fnmat(ar,i,j);

     }

     getch();

}

void fnmat(int ar[ROW][COL],int r,int c)

{

     int i,j,min,max;

     min=max=ar[0][0];

     for(i=0;i<r;i++)

     {

           for(j=0;j<c;j++)

           {

                if(min>ar[i][j])

                     min=ar[i][j];

                else

                     max=ar[i][j];

           }

     }

     printf("\n\n\tMix=%d\n\tMax=%d",min,max);

}

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