#include <stdio.h> #include<stdlib.h> void print(float arr[], int org_length, float avg) { printf("%.2f %.2f %.2f", arr[org_length - 1], arr[0], avg); } void swap(float arr[], int i, int j) { float tmp = arr[i]; arr[i] = arr[j]; arr[j] = tmp; } void selectionS...