C Program to Reverse Array

Question: Write a program in C to read an array containing n numbers and reverse this array.

Program

#include<stdio.h>


int main()
{
 int a[100], temp, i, n;

 printf("Enter n:");
 scanf("%d", &n);
 /* Reading Array */
 printf("Enter numbers:\n");
 for(i=0;i< n;i++)
 {
  printf("a[%d]=",i);
  scanf("%d",&a[i]);
 }
 /* Reversing */
 for(i=0;i< n/2;i++)
 {
  temp = a[i];
  a[i] = a[n-1-i];
  a[n-1-i] = temp;
 }
 /* Displaying result */
 printf("Reversed array is:\n");
 for(i=0;i< n;i++)
 {
  printf("%d\t", a[i]);
 }
 return(0);
}

Output

Enter n: 4↲
Enter numbers:
a[0] = 21↲
a[1] = 11↲
a[2] = 13↲
a[3] = 12↲
Reversed array is:
12    13    11    21