To find sum of all the elements of the given matrix

Program:

#include<stdio.h>
#include<conio.h>
void main()
{
    int mat[10][10];
    int i, j, row, col, sum = 0;
    clrscr();
    printf("Enter the order of the matrix : ");
    scanf("%d %d", &row, &col);
    printf("\nEnter the elements of the matrix : \n\n");
    for(i = 0; i < row; i++)
    for(j = 0; j < col; j++)
    scanf("%d", &mat[i][j]) ;
    for(i = 0; i < row; i++)
    for(j = 0; j < col; j++)
    sum = sum + mat[i][j];
    printf("\nThe sum of the elements in the matrix is : %d", sum);
    getch();
}

Output:

Enter the order of the matrix : 3 3
Enter the elements of the matrix :
1 2 3
4 5 6
7 8 9
The sum of the elements in the matrix is : 45