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Homework 2/Homework2Ccode.c

+/*
+ * File:   homework2.c
+ * Author:
+ *
+ * Created on November 24, 2018, 9:06 PM
+ * Description: To pass
+ */
+
+
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+// Function that gets data from user and write to destinations array
+void getData(int w, int h, int destinations[][w]);
+// Print the destinations matrix to stdout
+void printMatrix(int w, int h, int destinations[][w]);
+// Get the total flights and return an array of total
+int* getTotal(int w, int h, int destinations[][w]);
+// Find the busiest flight based on total array
+void findBusiest(int, int*);
+
+int main() {
+  int w, h;
+  // Check if the user's input is acceptable
+  do {
+    printf("Please input array dimension HxW (eg. 3x4): ");
+    scanf("%dx%d", &h, &w);
+
+    if (w > 15 || w <= 0 || h > 15 || h <= 0)
+    puts("width and height can only be in between 1 and 15");
+  } while (w > 15 || w <= 0 || h > 15 || h <= 0);
+  int destinations[h][w];
+  // Get user input data
+  getData(w, h, destinations);
+  printMatrix(w, h, destinations);
+
+  int* total = getTotal(w, h, destinations);
+  printf("        TOTAL");
+  for (int i = 0; i < w; i++) {
+    printf("%4d", total[i]);
+  }
+  findBusiest(w, total);
+  free(total);
+
+  return 0;
+}
+
+void getData(int w, int h, int destinations[][w]) {
+  printf("Please input destinations: (eg. 2 3 4 5)\n");
+  for (int j = 0; j < h; j++) {
+    printf("Please input DESTINATION%.2d: ", j + 1);
+    char buffer[50];
+    // Scanf for the whole string that ends with \n
+    scanf(" %[^\n]", buffer);
+    // Get data from the string based on " "
+    destinations[j][0] = atoi(strtok(buffer, " "));
+    for (int i = 1; i < w; i++) {
+      destinations[j][i] = atoi(strtok(NULL, " "));
+    }
+  }
+}
+
+void printMatrix(int w, int h, int destinations[][w]) {
+  puts("Flights");
+  printf("              ");
+  for (int i = 0; i < w; i++) {
+    printf("C%.2d ", i + 1);
+  }
+  printf("\n");
+  for (int j = 0; j < h; j++) {
+    printf("DESTINATION%.2d", j + 1);
+    for (int i = 0; i < w; i++) {
+      printf("%4d", destinations[j][i]);
+    }
+    printf("\n");
+  }
+}
+
+int* getTotal(int w, int h, int destinations[][w]) {
+  int* total = calloc(w, sizeof(int));
+  for (int i = 0; i < w; i++) {
+    for (int j = 0; j < h; j++) {
+      // Add all the column together
+      total[i] += destinations[j][i];
+    }
+  }
+  return total;
+}
+
+void findBusiest(int w, int* total) {
+  int highest = -1;
+  int id;
+
+  for (int i = 0; i < w; i++) {
+    if (total[i] > highest) {
+      highest = total[i];
+      id = i + 1;
+    }
+  }
+  printf("\nMost frequent flight: C%.2d\n", id);
+}