#include <stdio.h>

#define N 100


void transpose_matrix(int m[N][N], int n)
{
	int i, j, tmp;

	for (i = 0; i < n; i++) {
		for (j = i + 1; j < n; j++) {
			tmp = m[i][j];
			m[i][j] = m[j][i];
			m[j][i] = tmp;
		}
	}
}


void print_matrix(int m[N][N], int n)
{
	int i, j;

	for (i = 0; i < n; i++) {
		for (j = 0; j < n; j++) {
			printf("%d ", m[i][j]);
		}
		printf("\n");
	}
	printf("\n");
}


int main(void)
{
	int i, n = 3;

	int V[N][N] = {
		{1, 2, 3},
		{4, 5, 6},
		{7, 8, 9}
	};

	print_matrix(V, n);
	transpose_matrix(V, n);
	print_matrix(V, n);

	return 0;
}