Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to send an entire array as an argument in C language?
An array is a group of related items that is stored with a common name.
Declaring array
The syntax for declaring an array is as follows −
datatype array_name [size];
Initialization
An array can be initialized in two ways, which are as follows −
- Compile time initialization.
- Runtime initialization.
An array can also be initialized at the time of declaration as follows −
int a[5] = {100,200,300,400,500};Function
A function is a self-contained block that carries out a specific well-defined task. The two ways of passing the arrays as arguments to functions are as follows −
Sending an entire array as an argument to function.
Sending the individual elements as argument to function.
Now, let us understand how to send an entire array as an argument to function in C language.
Sending an entire array as argument to function
To send an entire array as argument, try to send the array name in the function call.
To receive an entire array, an array must be declared in the function header.
Example 1
Refer an example given below −
#include<stdio.h>
main ( ){
void display (int a[5]);
int a[5], i;
clrscr( );
printf ("enter 5 elements");
for (i=0; i<5; i++)
scanf("%d", &a[i]);
display (a); // Sending entire array ‘a’ using array name
getch( );
}
void display (int a[5]) {//receiving entire array
int i;
printf ("elements of the array are");
for (i=0; i<5; i++)
printf("%d ", a[i]);
}Output
When the above code is compiled together and executed, it produces the following result −
Enter 5 elements 10 20 30 40 50 Elements of the array are 10 20 30 40 50
Example 2
Following is the C program to print the elements in a reverse order from the array −
#include<stdio.h>
void main(){
//Declaring the array - run time//
int array[5],i;
void rev(int array[5]);
//Reading elements into the array//
printf("Enter elements into the array:
");
//For loop//
for(i=0;i<5;i++){
//Reading User I/p//
printf("array[%d] :",i);
scanf("%d",&array[i]);
}
//Displaying reverse order of elements in the array//
printf("The elements from the array displayed in the reverse order are :
");
rev(array); // Sending entire array ‘a’ using array name
getch();
}
void rev(int array[5]){ //receiving entire array
int i;
for(i=4;i>=0;i--){
//Displaying O/p//
printf("array[%d] :",i);
printf("%d
",array[i]);
}
}Output
When the above program is compiled together and executed, it produces the following result −
Enter elements into the array: array[0] :23 array[1] :34 array[2] :12 array[3] :56 array[4] :12 The elements from the array displayed in the reverse order are: array[4] :12 array[3] :56 array[2] :12 array[1] :34 array[0] :23
201 Views
