Question

Write a C program using array(s) that inputs 20 real numbers, then displays it backward on the screen. Print the given array and backward array.

Answer 1

Here is the code for you:

#include <stdio.h>
void reverse_array (double data[ ], int n)
{
for(int i = 0; i < n/2; i++)
{
int temp = data[i];
data[i] = data[n-i-1];
data[n-i-1] = temp;
}
}
int main()
{
double Array[20];
int n;
printf("Enter the number of elements: ");
scanf("%i", &n);
printf("Enter %i elements into the array: ", n);
for(int i = 0; i < n; i++)
scanf("%lf", &Array[i]);
printf("Before Reversing: ");
for(int i = 0; i < n; i++)
printf("%.2lf ", Array[i]);
printf("\n");
reverse_array(Array, n);
printf("After Reversing: ");
for(int i = 0; i < n; i++)
printf("%.2lf ", Array[i]);
printf("\n");
}

And the output screenshot is:

Terminal Shell Edit View Window Help 동 -))) 100%圃, Sat 10 Dec 04:20 ANANDA KUMAR THUMMAPUDI a E Currently Open Docum. c arrayReverse.c #include <stdio.h> 2 void reverse array (double datal, int n) a SimpleArrayRe... untitled text 4 for( int 1-0; i< n/2 ; i++) _ datali]: int tenp datai data[n-i-11; data[n-i-1temp; HomeworkLibC-bash 117x30 HomeworkLibCbash CPP--bash Macintosh:HomeworkLibC AnandakunarThummapudis gcc SimpleArrayReverse.C Macintosh:HomeworkLibC AnandaKuna rThummapudǐ$ ./a . out Enter the nunber of elements: 7 Enter 7 elements into the array: 11 22 33 44 55 66 77 Before Reversing: 11.00 22.0 33.08 44.80 55.00 66.80 77.0 After Reversing: 77.08 66.80 55.00 44.0 33.00 22.00 11.8 int main) double Array [201; int n; printf("Enter the number of elements: ") scanf("%", &n); printf("Enter elements into the array: for( int 1-0; i< n; i++) Macintosh:HomeworkLibC AnandaKunarThummapudiS ". scanf("%1f", &Array[1]); printf("Before Reversing: "); for( int 1-0; 1< n; i++) printf("%2f ", Arrayli]) printf(n") reverse array (Array, n) printf("After Reversing: "); for( int 1-0; 1< n; i++) 26 printf("%2f ", Arrayli]) printf("\n"; ANSI C Unicode (UTF-8)- Unix (LF) Saved: 02/11/16, 1:47:08 AM 663 / 101 / 29 100%