I sortof did this, not sure if this works, coded in a while ago and don't remember - it was when I was sick

sum.c

@@ -0,0 +1,48 @@
+/*WARNING:	 Before reading this you should know this isnt the nicest code, however I am very tired so I dont think I can change it and have the energy for the challenge*/
+
+
+#include <stdio.h>
+
+int main()
+{
+
+	printf("Please input size of a array: ");
+	int ArraySize;
+	scanf("%d", &ArraySize);
+	int input[ArraySize];
+
+	for(int i = 0;i<ArraySize;i++)
+	{
+	printf("Please add a number to the array: ");
+	scanf("%d",&input[i]);
+
+	}
+
+	int sum[ArraySize];
+
+	for(int i = 0;i<ArraySize;i++)
+	{
+		if(i == 0)
+		{
+			sum[i] = input[i];
+
+		}
+		else
+		{
+			sum[i] = input[i] + sum[i-1];
+
+
+		}
+
+	}
+
+
+	for(int i = 0;i<ArraySize;i++)
+	{
+		printf("%d, ", sum[i]);
+	}
+
+	printf("\n\n");
+
+
+}

unique.c

@@ -0,0 +1,33 @@
+#include <stdio.h> 
+#include <string.h>
+
+int main()
+{
+	char string[100];
+	int arr[300];
+
+	printf("Please type string: ");
+	fgets(string, sizeof(string), stdin);
+
+
+
+
+	for(int i = 0;i<3;i++)
+	{
+		int temp = string[i];
+
+		arr[temp] +=temp;
+
+		if(arr[temp] > temp)
+		{
+			printf("The string is not unique\n");
+			break;
+		}
+
+
+	}
+
+
+
+	return 0;
+}

vowel.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include <string.h>
+
+int main()
+{
+	int size = 50;
+	char input[size];
+	int del;
+	printf("Please input a string: ");
+	fgets(input, sizeof(input), stdin);
+
+	for(int i =0;i<sizeof(input);i++)
+	{
+		if(input[i] == 'a' || input[i] == 'A' || input[i] == 'e' || input[i] == 'E' || input[i] == 'i' || input[i] == 'I' || input[i] == 'o' || input[i] == 'O' || input[i] == 'u' || input[i] == 'U')
+		{
+			int x = i;
+			while(x<size)
+			{
+			input[x] = input[x+1];
+			x++;
+			}
+			i = 0;
+			//size--;
+
+		}
+
+	}
+
+	printf("%s\n", input);
+	return 0;
+}

vowels.c

@@ -0,0 +1,44 @@
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+int main()
+{	
+	int inputlength = 50;
+	char checkedInput[inputlength];
+	char input[inputlength];
+	printf("Please input a string of letters: \n");
+	fgets(input,sizeof(input), stdin);
+
+	for(int i = 0;i<inputlength;i++)
+	{	
+
+
+
+		//lol screw switches
+		if(input[i] == 'a'|| input[i] == 'A'|| input[i] == 'e'|| input[i] == 'E' || input[i] == 'i'|| input[i] == 'I' || input[i] == 'o'|| input[i] == 'O' || input[i] == 'u'|| input[i] == 'U')
+		{
+
+
+		}
+	else
+	{
+		checkedInput[i] = input[i];
+	}
+
+
+	}
+
+
+
+
+	for(int i =0;i<inputlength;i++)
+	{
+
+
+	printf("%c", checkedInput[i]);
+	}
+	printf("\n\n\nDone\n\n");
+
+	return 0;
+
+}