Passing arrays to functions in c.

Passing arrays to functions in c.

// Passing 1D array 
#include <stdio.h>
void fun(int a[],int m) //Here a[] is actually a pointer .We can also use int* a instead of int a[],both are same.
{
  for(int i=0;i<m;i++) {scanf("%d",&a[i]);}
}
void fu(int a[],int b[],int m)
{
  for(int i=0;i<m;i++) {b[i]=a[i];}
  for(int i=0;i<m;i++) {printf("%d ",b[i]);}
}
void main()
{ int a[10],b[10],m,n;
  scanf("%d",&m);  //Taking array size.
  fun(a,m);   // a (i.e a[]/*a) of fun () will now point to a[0] of main().
  fu(a,b,m);
}
//Passing 2D array
#include <stdio.h>
void fun(int a[][10],int m,int n)//Here the second dimension of parameter array and passed argument array should be same.
{                                //The argument is of type int(*)[10] so the parameter should be of int(*)[10]
  for(int i=0;i<m;i++)           //We cant use int*a[10] instead of int a[][10] because int *a[10] means array of 10 pointers
                                 //but int a[][10] means array of pointers each pointing to array of 10 integers
  {
for(int j=0;j<n;j++) {scanf("%d",&a[i][j]);}
  }
}
void fu(int a[][10],int b[][10],int m,int n)
{  for(int i=0;i<m;i++) 
  {
for(int j=0;j<n;j++) {b[i][j]=a[i][j];}
  }
   for(int i=0;i<m;i++) 
  {
for(int j=0;j<n;j++) {printf("%d ",b[i][j]);}printf("\n");
  }
}
void main()
{ int a[10][10],b[10][10],m,n;
  scanf("%d %d",&m,&n);//Taking m rows n columns
  fun(a,m,n);
  fu(a,b,m,n);
}