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homework2/HW2_184281MV_Philipp_Karlon_v2.c

+/**
+ * Author:          Philipp Karlon
+ * Created:         13.11.2018
+ * Modified:        14.11.2018
+ * Description:     The program creates dance pairs according to 
+ * 				    defined rules.
+ */
+ 
+#include <stdio.h>
+ 
+// constants
+#define ARRAYLEN 20
+ 
+// function prototypes
+int GetCount(void);
+void GetHeights(int count, int array[ARRAYLEN]);
+void DisplayingHeights(int countBoys, int countGirls, 
+                       int arrayBoys[ARRAYLEN],int arrayGirls[ARRAYLEN]);
+void SortingHeights(int count, int array[ARRAYLEN]);
+void DisplayingPairs(int countBoys, int countGirls,
+                     int arrayBoys[ARRAYLEN],int arrayGirls[ARRAYLEN]);
+
+int main()
+{
+	int countBoys;
+	int countGirls;
+	int arrayBoys[ARRAYLEN];
+	int arrayGirls[ARRAYLEN];
+	puts("Enter number of boys:");
+	countBoys = GetCount();
+	GetHeights(countBoys, arrayBoys);
+	puts("Enter number of girls:");
+	countGirls = GetCount();
+	GetHeights(countGirls, arrayGirls);
+	DisplayingHeights(countBoys, countGirls, arrayBoys, arrayGirls);
+	SortingHeights(countBoys, arrayBoys);
+	SortingHeights(countGirls, arrayGirls);
+	DisplayingPairs(countBoys, countGirls, arrayBoys, arrayGirls);
+	return 0;
+}
+
+/**
+ * Function to get the number of boys or girls respectively.
+ */
+int GetCount()
+{
+	int swap;
+	scanf("%d", &swap);
+	return swap;
+	
+}
+
+/**
+ * Function to fill in the heights of boys or girls, respectively, in
+ * the corresponding array. User will be prompted for a new value until
+ * he entered as many values as in count.
+ */
+void GetHeights(int count, int array[ARRAYLEN])
+{
+    int i;   
+	for (i = 0; i < count; i++)
+		{
+			do
+			{
+				printf("Enter Size %d:\n", i);
+				scanf("%d", &array[i]);
+			}
+			while(array[i] < 0);
+		}
+}
+ 
+/**
+ * Function prints out all heigts for boys and girls.
+ */
+void DisplayingHeights(int countBoys, int countGirls,
+                       int arrayBoys[ARRAYLEN],int arrayGirls[ARRAYLEN])
+{
+	int i;
+	puts("\n\n");
+    puts("Boys: ");
+    for (i = 0; i < countBoys; i++)
+			{
+				printf("%d, ", arrayBoys[i]);
+			} 
+    puts("\n");
+	puts("Girls: ");
+	for (i = 0; i < countGirls; i++)
+			{
+				printf("%d, ", arrayGirls[i]);
+			}
+    puts("\n");
+}
+
+/**
+ * The function sorts the transferred array with the help of 
+ * an insertion sort algorithm.
+ */
+void SortingHeights(int count, int array[ARRAYLEN])
+{
+	int i, j, key;
+	for ( j = 0; j < count; j++ ) 
+	{
+		key = array[j];
+		i = j - 1;
+		while ( i >= 0 && array[i] > key ) {
+			array[i + 1] = array[i];
+			i = i - 1;
+		}    
+		array[i + 1] = key;
+   }
+}
+
+/**
+* The function creates dance couples, whereby the largest boy forms 
+* a dance couple with the largest girl. If there is an unequal number 
+* of boys and girls, the largest remaining heights of the boys or 
+* the smallest remaining heights of the girls are printed out.
+ */
+void DisplayingPairs(int countBoys, int countGirls,
+                     int arrayBoys[ARRAYLEN],int arrayGirls[ARRAYLEN])
+{
+	int j;
+	puts("Pairs (boy, girl):");
+    if(countBoys > countGirls)
+    {
+		for (j = 0; j < countGirls; j++)
+		{
+			printf("(%d, %d) ", arrayBoys[j], arrayGirls[j]);
+		}
+		puts("\n\nBoys without partner:");
+		for(;j < countBoys; j++)
+		{
+			printf("%d, ",arrayBoys[j]);
+		}
+		puts("\n");
+	}
+	if(countBoys < countGirls)
+    {
+		for (j = 0; j < countBoys; j++)
+		{
+			printf("(%d, %d) ", arrayBoys[j], arrayGirls[j]);
+		}
+		puts("\n\nGirls without partner:");
+		for(;j < countGirls; j++)
+		{
+			printf("%d, ",arrayGirls[j]);
+		}
+		puts("\n");
+	}
+}