Implement simple algorithms & Experiment with pointers

calculations.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+void getInputArr(int *arrSize, int **arr);
+void println(char *printString, float printNum);
+int findMax(int arr[], int arrSize);
+float calcAverage(int arr[], int arrSize);
+
+int main() {
+    int arr[] = {10, 20, 30, 40, 50};
+    int totalArrBytes = sizeof(arr);
+    int firstArrBytes = sizeof(arr[0]);
+    int arrSize = totalArrBytes / firstArrBytes;
+
+    // Print Lengths for Understanding
+    println("Total Array Bytes: ", totalArrBytes);
+    println("First Element Bytes: ", firstArrBytes);
+    println("Total Length of Array: ", arrSize);
+
+    println("Max Element in Array: ", findMax(arr, arrSize));
+    println("Average of Elements in Array: ", calcAverage(arr, arrSize)); 
+
+    int *myArr;
+    int myArrSize;
+    getInputArr(&myArrSize, &myArr);
+
+    for (int i = 0; i < myArrSize; i++) {
+	printf("Element No.%i: %i\n", i, myArr[i]);
+    }
+
+    free(myArr);
+    return 0;
+}
+
+void getInputArr(int *arrSize, int **myArr) {
+    printf("Please Enter Length of Array: \n");
+    scanf("%i", arrSize);
+
+    *myArr = (int *) malloc(*arrSize * sizeof(int));
+
+    printf("Enter %i Numbers!\n", *arrSize);
+    for (int i = 0; i < *arrSize; i++) {
+	scanf("%i", &((*myArr)[i]));
+    }
+}
+
+void println(char *printString, float printNum) {
+    printf("%s%.2f\n", printString, printNum);
+}
+
+int findMax(int arr[], int arrSize) {
+    int max = arr[0];
+    for (int i = 1; i < arrSize; i++) { 
+	if (arr[i] >= max) {
+	    max = arr[i];
+	}
+    }
+    return max;
+}
+
+float calcAverage(int arr[], int arrSize) {
+    int sum = 0;
+    for (int i = 0; i < arrSize; i++) {
+	sum += arr[i];
+    }
+    return sum / arrSize;
+}