Question

What is an array? How to declare one dimensional array? In which case it is

used? OR Explain how to initialize one dimensional array with example.​

Answer 1

Array:

An array is a list of variables on a similar data type present in continuous memory location.

• 1D Array declaration Syntax is as follows :

datatype array name [size]

For example, int buchiage[ 15 ]

• Initialization:

An array can be initialized in two ways, which are as follows...

1. Compile time initialization
2. Runtime initialization

1. Compile time initialization:

In compile time initialization array elements can be initialized at the time of Array declaration.

• Here Array size are may or may not be defined

EX:- int varshumarks[ ] = { 100, 100, 100, 100, 100 }

• Following is the C program on compile time initialization :

#include<stdio.h>

int main ( )

{

int pandumarks[ 5 ] = { 50, 60, 70, 60, 50 };

int i;

printf ( "elements of the array are" );

for ( i=0; i<5; i++)

printf ( "%d", a[ i ] );

}

2. Run time initialization:

In Run time initialization for loop is used initialized the variables of Array

• Following is the C program on Run time initialization:

#include<stdio.h>

main ( )

{

int a[ 5 ],i;

printf ( "enter 5 elements" );

for ( i=0; i<5; i++ )

scanf( "%d", &a[ i ] );

printf( "elements of the array are" );

for ( i=0; i<5; i++ )

printf( "%d", a[ i ] );

}