C program to read a matrix (m x n) column-wise, then transpose the matrix

Write a c program to read a matrix (m x n) column-wise, then transpose the
matrix and get the output printed row-wise in the matrix form.

#include
#include
void main()
{
int a[3][3],b[3][3],i,j;
clrscr();
printf("\nEnter the matrix:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
scanf("%d",&a[i][j]);
}
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
b[j][i]=a[i][j];
}
}
printf("\nTranspose Matrix:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
printf("%d\t",b[i][j]);
printf("\n");
}
getch();
}

/*Output
Enter the matrix:
12 23 34
45 56 67
78 89 90

Transpose Matrix:
12 45 78
23 56 89
34 67 90
*/