Functions - Passing arrays to functions

Passing arrays to functions:-

Arrays are passed to a function by reference by default. Arrays can be passed as an argument to a function using any 3 following ways. They are,

1. By declaring formal argument/parameter as a pointer variable.

Example :

Aread(p)
int *p;
{

}

2. By declaring formal argument as an unsized array.

Example

Aread(a)
int a[];
{

}

3. By declaring formal argument as sized array.


Example

Aread(a)
int a[10];
{

}

Following Example depicts about the different ways of passing arguments a function,

#include
ArrayRead(p,n)
int *p,n;
{
int i;
printf("\nEnter the array elements ");
for(i=0;i{
 scanf("%d",*(p+i));
}
}

ArrayPrint(a,n)
int a[],n;
{
int i;
printf("\nThe array elements ");
for(i=0;i{
 printf("%3d",a[i]);
}
}
Sort(a,n)
int a[50],n;
{
int i,j,t;
for(i=0;i  {
   for(j=i+1;j    {
      if(a[i]>a[j])
    {
    t=a[i];
    a[i]=a[j];
    a[j]=t;
    }
     }
   }

#include

main()
{
int a[50],n;

printf("\nEnter the size of array ");
scanf("%d",&n);

ArrayRead(a,n);

ArrayPrint(a,n);

ArraySort(a,n);

}