100% c prog to print transpose of a matrix

#include <stdio.h>

void main()
{
    int i,j,m,n,a[20][20],b[20][20];
    printf("\n this program will take a matrix as input and print its transpose\n");
    printf("\n enter no of rows&columns each in 1 to 20:");
    scanf("%d%d",&m,&n);
    for(i=0;i<m;i++)
    {
        for(j=0;j<n;j++)
        {
            printf("\n enter a[%d][%d]:",i,j);
            scanf("%d",&a[i][j]);
            b[j][i]=a[i][j];
        }
    }
    printf("\n given matrix is:\n");
    for(i=0;i<m;i++)
    {
        for(j=0;j<n;j++)
        {
          printf("%5d",a[i][j]);
        }
        printf("\n");
    }
    printf("\n transpose of the given matrix is:\n");
    for(i=0;i<n;i++)
    {
        for(j=0;j<m;j++)
        {
          printf("%5d",b[i][j]);
        }
        printf("\n");
    }
}// end of main()

ఔట్పుట్ తెరమీద

this program will take a matrix as input and print its transpose

 enter no of rows&columns each in 1 to 20:2
 3
 enter a[0][0]:1
 enter a[0][1]:2
 enter a[0][2]:3
 enter a[1][0]:10
 enter a[1][1]:20
 enter a[1][2]:0
 given matrix is:
    1    2    3
   10   20    0

 transpose of the given matrix is:
    1   10
    2   20
    3    0

 మరోసారి చేస్తే  ఔట్పుట్ తెరమీద

this program will take a matrix as input and print its transpose

 enter no of rows&columns each in 1 to 20:2 2
enter a[0][0]:1

enter a[0][1]:9
enter a[1][0]:4
enter a[1][1]:7
given matrix is:
    1    9
    4    7

transpose of the given matrix is:
    1    4
    9    7

//దేశభక్తులు ఇక్కడ 1947ని గుర్తిస్తారు