Question

C programming

Write a function that goes through all elements of an array of size n, and output the minimum and maximum values using pointers.

Since C functions can only return one value, you must use pointers to output the minimum and maximum values from the function. You are not expected to print the values on the screen.

Note: you will be assessed on the functionality and the coding style.

Answer 1

#include <stdio.h>

//function to find the max and minimum using pointer
void minMax(int arr[], int n, int *min, int *max)
{
//initialize the pointer variable with array first element
*min = *max = arr[0];
  
//find the minimum and maximum
for(int i=1; i<n; i++)
{
if(*min>arr[i])
*min = arr[i];
  
if(*max<arr[i])
*max = arr[i];
}
}

int main()
{
//array declaration and initialization
int a[5] = {10, 25, 15, 9, 50};
  
//variable declaration
int min, max;
  
//function calling
minMax(a, 5, &min, &max);

//display minimum and maximum value
printf("\n Min = %d", min);
printf("\n Max = %d", max);

return 0;
}

OUTPUT:

Answer 2

#include <stdio.h>

//function to find the max and minimum using pointer
void minMax(int arr[], int n, int *min, int *max)
{
//initialize the pointer variable with array first element
*min = *max = arr[0];
  
//find the minimum and maximum
for(int i=1; i<n; i++)
{
if(*min>arr[i])
*min = arr[i];
  
if(*max<arr[i])
*max = arr[i];
}
}

int main()
{
//array declaration and initialization
int a[5] = {10, 25, 15, 9, 50};
  
//variable declaration
int min, max;
  
//function calling
minMax(a, 5, &min, &max);

//display minimum and maximum value
printf("\n Min = %d", min);
printf("\n Max = %d", max);

return 0;
}

OUTPUT: