Bubble sort program by using pointers and functions in c

#include<stdio.h>
void swap(int *x, int *y)
{
int temp;
temp= *x;
*x=*y;
*y=temp;
}
int main()
{
int size,m,n;
printf("Enter size of array:");
scanf("%d",&size);
int a[size];
for(m=0;m<size;m++)
{
printf("Enter values of %d array element:",m);
scanf("%d",&a[m]);
}
for(m=0;m<size;m++)
{
for(n=m+1;n<size;n++)
{
if(a[m]>a[n])
{
swap(&a[m],&a[n]);
}
}
}
for(m=0;m<size;m++)
{
printf("%d\t",a[m]);
}
getch();
return 0;
}