Passing Entire 1-D Array to Function in C Programming

Passing Entire 1-D Array to Function in C Programming

• Array is passed to function Completely.
• Parameter Passing Method : Pass by Reference
• It is Also Called “Pass by Address“
• Original Copy is Passed to Function
• Function Body Can Modify Original Value.
• Example :

#include<stdio.h>
#include<conio.h>
void modify(int b[3]);
void main()
{
int arr[3] = {1,2,3};
modify(arr);
for(i=0;i<3;i++)
  printf("%d",arr[i]);
getch();
}

void modify(int a[3])
{
int i;
for(i=0;i<3;i++)
  a[i] = a[i]*a[i];
}

Output : 

1 4 9

•  Here “arr” is same as “a” because Base Address of Array “arr” is stored in Array “a”

Alternate Way of Writing Function Header :

void modify(int a[3])

OR

void modify(int *a)

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