C Exercises: Array fill, replace each subsequent position of the array by the double value of the previous

C Basic Declarations and Expressions: Exercise-125 with Solution

Write a C program that reads an array of integers (length 7), and replace the first element of the array by a give number and replace each subsequent position of the array by the double value of the previous.

Sample Solution:

C Code:

#include <stdio.h>
int main ()
{
  int array_nums[7], i, x, k;
  printf("Input the first element of the array:\n");
  scanf("%d", &x);

  for (k = 0, i = x; k < 7; i *= 2, k++)
  {
    array_nums[k] = i;
  }
  printf("\nArray elements:\n");
  for (i = 0; i < 7; i++)
  {
    printf("array_nums[%d] = %d\n", i, array_nums[i]);
  }
}

Sample Output:

Input the first element of the array:
5

Array elements:
array_nums[0] = 5
array_nums[1] = 10
array_nums[2] = 20
array_nums[3] = 40
array_nums[4] = 80
array_nums[5] = 160
array_nums[6] = 320

Flowchart:

C programming Code Editor:

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