diff --git a/assignment4.txt b/assignment4.txt
new file mode 100644
index 0000000..61c1a12
--- /dev/null
+++ b/assignment4.txt
@@ -0,0 +1,9 @@
+Aly Milich
+
+1. A string is collection of characters that can make up words or sentences. In order to read a string in C, strings have to be split into character arrays which break apart the string into individual chars.
+
+2. Arrays are advantageous because they give the programmer complete control over what's inside and organizes data. It is easy and efficient to create an array and add/delete things from the array. A disadvantage is that they can be difficult to navigate sometimes and require a lot of loops to organize/search through.
+
+3. The compiler won't implicitly generate the address of the first element in the array when an array is initialized without values originally added to it.
+
+4. The easiest way to compare two strings to see if they're equal is the function strcmp(). If 0 is returned, the strings are equal.
diff --git a/dubarr.c b/dubarr.c
new file mode 100644
index 0000000..406c936
--- /dev/null
+++ b/dubarr.c
@@ -0,0 +1,35 @@
+#include <stdio.h>
+/*remove doubles in an array
+  @author Aly Milich
+  */
+int main(){
+
+	int input[5] = {4, 5, 4, 5, 6};
+	int output[5];
+
+	int swap, i, j;
+
+
+	for(i =0; i<5; i++){
+		for(j=0; j<4; j++){
+			if(input[j]>input[j+1]){
+				swap = input[j];
+				input[j] = input[j+1];
+				input[j+1] = swap;
+			}
+		}
+	}
+
+	for(i=0; i<5; i++){
+		if(input[i] != input[i-1])
+			output[i] = input[i];
+	}
+
+	for(i=0; i<5; i++){
+		if(output[i]!=0)
+			printf("%d\n", output[i]);
+	}
+
+
+	return 0;
+}
diff --git a/hangman.c b/hangman.c
new file mode 100644
index 0000000..52dc0d4
--- /dev/null
+++ b/hangman.c
@@ -0,0 +1,41 @@
+#include <stdio.h>
+
+/* game of hangman
+
+   @author Aly Milich
+   */
+
+int main(){
+
+	char word[8] = "computer", guess;
+	int lives=5;
+
+	printf("You have 5 lives.\n");
+	printf("The word has 8 letters.");
+
+	while(1){
+			printf("Enter your guess.\n");
+			scanf("%c", &guess);
+
+			guess = getchar();
+
+		for(int i =0; i<5; i++){
+
+			if(word[i] == guess)
+				printf("That is one of the letters!\n");
+			else{
+				printf("That is not one of the letters.\n");
+				lives--;
+				printf("You have %d lives left.\n", lives);
+			}
+
+		}
+	}
+
+	if(lives == 0){
+		printf("You lose.");
+	}
+
+	return 0;
+
+}
diff --git a/numchars.c b/numchars.c
new file mode 100644
index 0000000..0a1aefc
--- /dev/null
+++ b/numchars.c
@@ -0,0 +1,59 @@
+#include <stdio.h>
+
+/*number of a char in an input
+I wanted to do something a little nicer than just creating a counter for each letter so I tried to do this (alphabetizes and splits the array). It mostly works except it doesn't recognize uppercase and lowercase as different and sometimes has a few glitches. I've been looking at it for a while and was wondering someone could advise me on how to fix this but I can look more tomorrow. Sorry it isn't 100% yet, but I thought it would be good to try something a little more complex.
+  @author Aly Milich
+  */
+
+int main(){
+
+	int amount, i, j, counter=1, resets =0;
+
+	printf("How many characters do you want to input?\n");
+	scanf("%d", &amount);
+
+	char input[amount];
+	char letter[amount];
+	int number[amount];
+
+	printf("Enter the chars you would like to input.\n");
+
+	char temp;
+
+	for(i=0; i<amount; i++){
+		scanf("%c", &input[i]);
+		input[i] = getchar();
+	}
+
+	/*alphabetize array*/
+	for(i=0; i<amount; i++){
+		for(j=0; j<amount-1; j++){
+			if(input[j]>input[j+1]){
+				temp = input[j+1];
+				input[j+1] = input[j];
+				input[j] = temp;
+			}
+		}
+	}
+
+	letter[0] = input[0];
+	number[0] = 1;
+
+	for(i=1; i<amount; i++){
+		if(input[i] == input[i-1])
+			counter++;
+		else if(input[i] != input[i+1]){
+			resets++;
+			number[resets-1] = number[resets-1] + counter;
+			letter[resets] = input[i];
+			counter = 1;
+		}
+
+		number[amount-1] = counter;
+	}
+
+	for(i=0; i<amount; i++)
+		printf("%c, %d\n", letter[i], number[i]);
+
+	return 0;
+}
diff --git a/sumarr.c b/sumarr.c
new file mode 100644
index 0000000..4b7691c
--- /dev/null
+++ b/sumarr.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+
+int main(){
+	
+	int arr[5] = {1, 2, 3, 5, 6};
+	int output[5];
+
+	int i, sum;
+
+	for(i =0; i<5; i++)
+		sum = sum + arr[i];
+
+	for(int j =0; j<5; j++)
+		output[j] = sum-arr[j];
+
+	for(int k=0; k<5; k++)
+		printf("%d\n", output[k]);
+
+	return 0;
+
+}