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  A function is a  block of statements that performs a specific task .  In c, we can divide a large program into the basic building blocks known as function. The function contains the set of programming statements enclosed by {}. A function can be called multiple times to provide reusability and modularity to the C program. In other words, we can say that the collection of functions creates a program. The function is also known as  procedure  or  subroutine  in other programming languages.

  An array is a collection of data items, all of the same type, accessed using a common name. A one-dimensional array is like a list;  A two dimensional array is like a table;  The C language places no limits on the number of dimensions in an array, though specific implementations may. #include <stdio.h> void main ( ) {   int number [ 30 ] ;   int i , j , a , n ; printf ( "Enter the value of N \n " ) ; scanf ( "%d" , & n ) ;   printf ( "Enter the numbers \n " ) ; for ( i = 0 ; i < n ; ++ i ) scanf ( "%d" , & number [ i ] ) ;   /* sorting begins ... */   for ( i = 0 ; i < n ; ++ i ) { for ( j = i + 1 ; j < n ; ++ j ) { if ( number [ i ] < number [ j ] ) { a = number [ i ] ; number [ i ] = number [ j...