initial commit / finished report

prog/a1.c

@@ -0,0 +1,85 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <math.h>
+
+typedef enum {
+    ABSOLUTE,
+    DELTA,
+    NUM_INPUT_TYPE
+} InputType;
+
+typedef struct {
+    double x;
+    double y;
+} Point;
+
+typedef struct {
+    Point pt;
+    double fuel;
+} Car;
+
+double calc_dist(Point *p1, Point *p2) {
+    double x2 = (p1->x - p2->x) * (p1->x - p2->x);
+    double y2 = (p1->y - p2->y) * (p1->y - p2->y);
+    return sqrt(x2 + y2);
+}
+
+void get_info(Car *c) {
+    printf("Current Position: (%.2f, %.2f)\nFuel Available: %.2f Liter\n",
+        c->pt.x,
+        c->pt.y,
+        c->fuel
+    );
+}
+
+int move(Car *c, Point *dest) {
+    double d = calc_dist(&c->pt, dest);
+    if (d > c->fuel) return 0;
+
+    c->pt = *dest;
+    c->fuel -= d;
+    return 1;
+}
+
+int main(void) {
+
+    Car myCar = {{0.0,0.0}, 90.0};
+    Point pt = {0};
+
+    while(1) {
+        get_info(&myCar);
+        char c;
+        printf("Continue? [y/n]: ");
+        scanf("%1[a-zA-Z]", &c);
+        if (c == 'n') break;
+        InputType t;
+        bool isValidInput = false;
+        while (!isValidInput) {
+            printf("Select mode [0 = Absolute Position / 1 = Relative Position]: ");
+            scanf("%u", (unsigned int*)&t);
+            if (t < NUM_INPUT_TYPE) isValidInput = true;
+            else puts("Invalid mode!");
+        }
+        printf("Input x coordinate: ");
+        scanf("%lf", &pt.x);
+        printf("Input y coordinate: ");
+        scanf("%lf", &pt.y);
+        switch (t) {
+            case ABSOLUTE:
+                break;
+            case DELTA:
+                pt.x += myCar.pt.x;
+                pt.y += myCar.pt.y;
+                break;
+            default:
+                break;
+        }
+        int res = move(&myCar, &pt);
+        if (res == 0) {
+            puts("Low Fuel!");
+        }
+        getchar(); // environment specific fix
+    }
+
+    return 0;
+}