The below mentioned program copies the content of one array name ‘source’ into another array named ‘dest’ in the reverse order.
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#include
#include

void main(){
int source[100], dest[100],i,j,no;
clrscr();
printf("Enter the number of elements: ");
scanf("%d",&no);
 for(i=0;i<no;i++){
  printf("Enter Source Array Element%d :",i+1);
  scanf("%d",&source[i]);
 }
 for(i=0,j=no-1;i<no;i++,j--){
  dest[j]=source[i];
 }
 printf("Destination array:\n");
 for(i=0;i<no;i++){
  printf("%d\t",dest[i]);
 }
 getch();
}

Output:

Enter the number of elements: 10
Enter Source Array Element1 :1                                                  
Enter Source Array Element2 :2                                                  
Enter Source Array Element3 :3                                                  
Enter Source Array Element4 :4                                                  
Enter Source Array Element5 :5                                                  
Enter Source Array Element6 :6                                                  
Enter Source Array Element7 :7                                                  
Enter Source Array Element8 :8                                                  
Enter Source Array Element9 :9                                                  
Enter Source Array Element10 :10                                                
Destination array:                                                               
10     9      8      7      6      5      4      3      2      1       

Also See:
1-Dimensional Array in C Programming Language