Jack Rosen, Assignment 8

assignment8.txt

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+Jack Rosen
+1. CAN CRASH! Bc
+2. 3 bytes since the dynamically allocated char array is not freed and  it is size 3 bytes so it is lost.
+3. 27
+4. 26 p = (char *) malloc(strlen(a) + strlen(b) + 1) = {'', '', ''};
+34 free(p);}

numbers.txt

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+5
+4.2
+6.68
+23.5
+6.4
+8.65

print.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+int main()
+{
+	FILE *numbers = fopen("numbers.txt", "r");
+	int i = 0;
+	fscanf(numbers, "%d", &i);
+	int sum = 0, counter = 0;
+	float arr[i], average = 0, standard = 0;
+	for(int j = 0; j < i; j++)
+	{
+		fscanf(numbers, "%f", &arr[j]);
+		average += arr[j];
+		counter++;
+
+	}
+	for (int j = 0; j < i; j++)
+	{
+		standard += (arr[j] - (average / counter))*(arr[j] - (average / counter));
+	}
+	standard /= (counter-1);
+	standard = sqrt(standard);
+	printf("The average of the numbers was %.2f\n", (average / counter));
+	printf("The standard deviation is %.2f\n", standard);
+	return 0;
+}

sort.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int main()
+{
+	printf("How many integers would you want in the array?\n");
+	int input = 0;
+	scanf("%d", &input);
+	int *array1 = (int *)malloc(sizeof(input) * input);
+	int *array2 = (int *)malloc(sizeof(input + 1) * input);
+	int *array3 = (int *) malloc(sizeof(input + 1) * input);
+	srand(time(NULL));
+	for (int i = 0; i < input; i++)
+	{
+		array1[i] = rand() % 999 + 1;
+		array2[i] = array1[i];
+	}
+	for (int i = 0; i < input; i++)
+	{
+		for (int j = i + 1; j < input; j++)
+		{
+			if (array2[i] > array2[j])
+			{
+				int tmp = array2[j];
+				array2[j] = array2[i];
+				array2[i] = tmp;
+			}
+		}
+	}
+	for ( int i = input - 1; i >= 0; i--)
+	{
+		array3[input - 1 - i] = array2[i];
+	} 
+	for (int i = 0; i < input; i++)
+	{
+		printf("%d\n", array1[i]);
+	}
+	printf("\n");
+	for (int i = 0; i < input; i++)
+	{
+		printf("%d\n", array2[i]);
+	}
+	printf("\n");
+	for (int i = 0; i < input; i++)
+	{
+		printf("%d\n", array3[i]);
+	}
+	free(array1);
+	free(array2);
+	free(array3);
+}