Code
#include
void main()
{
static int array1[10][10], array2[10][10];
int i, j, m, n, a, b, c, p, q, r;
printf("Enter the order of the matrix \n");
scanf("%d %d", &m, &n);
printf("Enter the co-efficents of the matrix \n");
for (i = 0; i < m; ++i)
{
for (j = 0; j < n; ++j)
{
scanf("%d,", &array1[i][j]);
array2[i][j] = array1[i][j];
}
}
printf("Enter the numbers of two rows to be exchanged \n");
scanf("%d %d", &a, &b);
for (i = 0; i < m; ++i)
{
/* first row has index is 0 */
c = array1[a - 1][i];
array1[a - 1][i] = array1[b - 1][i];
array1[b - 1][i] = c;
}
printf("Enter the numbers of two columns to be exchanged \n");
scanf("%d %d", &p, &q);
printf("The given matrix is \n");
for (i = 0; i < m; ++i)
{
for (j = 0; j < n; ++j)
printf(" %d", array2[i][j]);
printf("\n");
}
for (i = 0; i < n; ++i)
{
/* first column index is 0 */
r = array2[i][p - 1];
array2[i][p - 1] = array2[i][q - 1];
array2[i][q - 1] = r;
}
printf("The matix after interchanging the two rows(in the original matrix) \n");
for (i = 0; i < m; ++i)
{
for (j = 0; j < n; ++j)
{
printf(" %d", array1[i][j]);
}
printf("\n");
}
printf("The matix after interchanging the two columns(in the original matrix) \n");
for (i = 0; i < m; ++i)
{
for (j = 0; j < n; ++j)
printf(" %d", array2[i][j]);
printf("\n");
}
}
Output
Enter the order of the matrix
2 2
Enter the co-efficents of the matrix
34 70
45 90
Enter the numbers of two rows to be exchanged
1 2
Enter the numbers of two columns to be exchanged
1 2
The given matrix is
34 70
45 90
The matix after interchanging the two rows(in the original matrix)
45 90
34 70
The matix after interchanging the two columns(in the original matrix)
70 34
90 45
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