Question

Write a C program to
i. Create a 2D array [Matrix] [in main function]
ii. Write a function to read 2D array[Matrix]
iii. Write a function that will return true(1) if entered matrix is symmetric or false(0) is not symmetric.
iv. Print whether entered matrix is symmetric or not [in main function]

Answer 1

Program:
#include<stdio.h>
void main()
{
int m, n, c, d, matrix[10][10], transpose[10][10];
clrscr();
printf("Enter the number of rows and columns of matrix\n");
scanf("%d%d", &m, &n);
printf("Enter elements of the matrix\n");
for (c = 0; c < m; c++)
for (d = 0; d < n; d++)
scanf("%d", &matrix[c][d]);
for (c = 0; c < m; c++)
for (d = 0; d < n; d++)
transpose[d][c] = matrix[c][d];
if (m == n)
{
for (c = 0; c < m; c++)
{
for (d = 0; d < m; d++)
{
if (matrix[c][d] != transpose[c][d])
break;
}
if (d != m)
break;
}
if (c == m)
printf("The matrix is symmetric.\n");
else
printf("The matrix isn't symmetric.\n");
}
else
printf("The matrix isn't symmetric.\n");
getch();
}
Output:
Enter the number of rows and columns of matrix
2 2
Enter elements of matrix
1 2 3 4
The matrix isn’t symmetric.