10_Lotto/10_Lotto.c

@@ -0,0 +1,100 @@
+#include "10_Lotto.h"
+
+int main() {
+    // vars
+    int usr_input[ARRLENGTH] = {0}, ran_nums[ARRLENGTH] = {0}, amnt_correct;
+
+    // input
+    for (int i = 0; i < ARRLENGTH; i++) {
+        usr_input[i] = Input(usr_input);
+    }
+
+    // initializing number generator
+    Initialize();
+
+    // fill lottery array
+    RanArray_Fill(ran_nums);
+
+    // check for correct guesses and writes the num of correct guesses in amnt_correct
+    amnt_correct = CheckGuess(usr_input, ran_nums);
+
+    // output
+    Output(amnt_correct);
+
+    // debugging
+    for (int i = 0; i < ARRLENGTH; i++)     // output user input
+    {
+        printf("\nusr_in %i: %i", i, usr_input[i]);
+    }
+    
+    for (int i = 0; i < ARRLENGTH; i++)     // output random numbers
+    {
+        printf("\nran_num %i: %i", i, ran_nums[i]);
+    }
+    
+
+    return 0;
+}
+
+void Initialize() {
+    time_t t;
+    srand(time(&t));
+}
+
+int Input(int usr_input[]) {
+    int input;
+    while (1) {
+        printf("\nPlease type in a number: ");
+        scanf("%i", &input);                                                    // user input number
+        if (CheckNotInNums(usr_input, input) && ValidNum(input)) {
+            break;                                                              // returns num if accectable
+        }
+        printf("\nNumber is not allowed.");                                     // error: invalid number
+    }
+    return input;
+}
+
+void Output(int amnt_correct) {
+    printf("\nYou got %i numbers right!", amnt_correct);
+}
+
+int CheckGuess(int usr_in[], int ran_nums[]) {
+    int count = 0;
+    for (int i = 0; i < ARRLENGTH; i++)                         // iterating through usr_in
+    {
+        if (CheckNotInNums(ran_nums, usr_in[i]) == 0) {         // checks and counts how often each num of usr_in is in ran_nums
+            count++;
+            continue;
+        }
+    }
+    return count;                                               // returns amount of right guesses
+}
+
+void RanArray_Fill(int arr[]) {
+    int random_number;
+    for (int i = 0; i < ARRLENGTH; i++) {                   // fill array with random values from 1 to 49
+        while (1) {
+            random_number = RanNum();
+            if (CheckNotInNums(arr, random_number)) {       // check if random number doesn't exist yet
+                arr[i] = random_number;                     // if check successfull: writes random number in array
+                break;
+            }        
+        }
+    }
+}
+
+int RanNum() {
+    return (rand() % 49) + 1;       // returns random values from 1 to 49
+}
+
+int CheckNotInNums(int arr[], int num) {
+    for (int i = 0; i < ARRLENGTH; i++) {
+        if (arr[i] == num) return 0;                // returns 0 if num exists already
+    }
+    return 1;                                       // returns 1 if num doesn't exist yet
+}
+
+int ValidNum(int input) {
+    if (input > 0 && input < 50) return 1;          // returns 1 if input is between 0 and 50, thus valid
+    return 0;                                       // returns 0 if input is NOT between 0 and 50, thus invalid
+}

10_Lotto/10_Lotto.h

@@ -0,0 +1,16 @@
+// includes
+#include <stdio.h>
+#include <time.h>
+
+// defines
+#define ARRLENGTH 6
+
+// function declarations
+void Initialize();
+int Input(int[]);
+void Output(int);
+int CheckGuess(int[], int[]);
+void RanArray_Fill(int[]);
+int RanNum();
+int CheckNotInNums(int[], int);
+int ValidNum(int);

8_Power_Calculator/8_Power_Calculator.c

@@ -0,0 +1,30 @@
+#include "8_Power_Calculator.h"
+
+void main() {
+    unsigned long base, power;
+
+    // input
+    printf("Please type in the base: ");
+    scanf("%i", &base);
+    printf("\nPlease type in the power: ");
+    scanf("%i", &power);
+
+    // calculate
+    base = Calculate(base, power);
+
+    // output
+    printf("\nThe number is: %i.", base);
+
+    return 0;
+}
+
+unsigned long Calculate(unsigned long base, unsigned long power) {
+    unsigned long baseOriginal = base;
+    if (power == 0) return 1;                   // power zero
+    if (power > 0) {                            // power positive
+        for (unsigned int i = 1; i < power; i++) {
+            base *= baseOriginal;
+        }
+    }
+    return base;
+}

8_Power_Calculator/8_Power_Calculator.h

@@ -0,0 +1,5 @@
+// libraries
+#include <stdio.h>
+
+//functions
+unsigned long Calculate(unsigned long, unsigned long);

9_Num_Sort/9_Num_Sort.c

@@ -0,0 +1,30 @@
+// Bubblesort
+
+#include "9_Num_Sort.h"
+
+int main() {
+    // vars
+    int nums[MAXARR] = {12,15,17,6,2,4,7,6,3,10};
+
+    // sort
+    for (int max = sizeof(nums)/4 - 1; max >= 0; max--) {
+        //vars
+        int temp = 0;
+
+        // main loop
+        for (int i = 0; i < sizeof(nums)/4 - 1; i++) {  // sizeof -> bytes, so divided by type size; -1 to avoid overflow
+            if (nums[i] > nums[i + 1]) {
+                temp = nums[i];                         // switching the numbers
+                nums[i] = nums[i + 1];
+                nums[i + 1] = temp;
+            }
+        }
+    }
+
+    // output
+    for (int i = 0; i < sizeof(nums)/4; i++) {          // sizeof -> bytes, so divided by type size; -1 to avoid overflow
+        printf("%i\n", nums[i]);
+    }
+
+    return 0;
+}

9_Num_Sort/9_Num_Sort.h

@@ -0,0 +1,3 @@
+#include <stdio.h>
+
+#define MAXARR 10