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Array Element Swap

in C | 2018-06-15

Difficulty : Beginner

By DePaul Dimadis

Choose your prefered Language:

Write a C language program that will alternate the contents of a one-dimensional N-integer matrix (N = known) as follows:

The 1st element with the Nth element
The 2nd element with the N-1 element
etc...

The program will display the table before and after switching its data.

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define N 50
int a[N],i,t,f,j,k,temp;

void main()
{
   srand((unsigned int)time(0));

   for(i=0; i<N; i++){
      a[i]=rand()%N;
      printf("%d\n",a[i]);
   }
   printf("\n");

   for(i=0;i<N; i++)    
   {
      temp=a[i];
      a[i]=a[N-i-1];
      a[N-i-1]=temp;
   }

   for(i=0; i<N; i++)    
      printf("%d\n",a[i]);
}

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$Programming in C (Developer\'s Library) 4th Edition$

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Array Element Swap

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