Double any element's value that is less than minval. ex: if minval = 10, then datapoints = {2, 12,9, 20) becomes {4, 12, 18, 20).

#include

int main(void) {
const int num_points = 4;
int datapoints[num_points];
int minval;
int i;
scanf("%d", & minval);
for (i = 0; i < num_points; ++i)
{ scanf("%d ", & (datapoints[i])); }
for (i = 0; i < num_points; ++i)
{ printf("%d ", datapoints[i]); }
printf("\n");
return 0; }

The correct program to this question can be given as:

Program:

#include <stdio.h>

int main(void) //define main method.

{

  const int NUM_POINTS = 4;  //define constant variable and assign value.

  int dataPoints[NUM_POINTS]; //define array.

  int minVal = 0; //define variable

  int i = 0;  //define variable

  printf("Enter minimum value :"); //message

  scanf("%d",&minVal); //input value from user.

  printf("Enter array elements :");  //message

  for(i = 0;i<NUM_POINTS;++i)  //loop.

  {

     scanf("%d",&(dataPoints[i])); //assign elements in array

  }

  for (i = 0; i < NUM_POINTS; ++i) //loop

  {//conditional statement.

   if(dataPoints[i]<minVal) //check condition.  

   {

   dataPoints[i] = 2*dataPoints[i]; //multiply by 2.

   }

  }

   printf("array elements :"); //message

  for (i = 0; i < NUM_POINTS; ++i) //loop.

  {

     printf("%d ", dataPoints[i]); //print array value.

  }

  return 0;

}

Output:

Enter minimum value :10

Enter array elements :2 12 9 20

array elements :4 12 18 20  

Explanation:

The explanation of the above C language program as follows:

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