added weekly exercises of isp-ws25

c/isp-ws25/weeklies/week02/w02ex01.c

@@ -0,0 +1,59 @@
+/* Bounding Box 2D
+- = rectangle that completely encloses the circle (whole circle lies within the rectangle or on its boundary)
+- bounding box must be smallest possible rectangle that encloses the circle (square)
+[x] ask for x of the center of the circle
+[x] ask for y of the center of the circle
+[x] ask for radius of the circle
+[x] calculate 2D bounding box for given circle
+[x] print coordinates of 4 corners
+[x] print coordinates with 2 decimals
+[x] print as "Bounding Box - <CORNER_NAME>: (<X_COORDINATE> / <Y_COORDINATE>)"
+[x] order: TL (top-left), TR (top-right), BL (bottom-left), BR (bottom-right)
+[x] circle as typedef struct
+[x] bounding box as typedef struct
+*/
+
+#include <stdio.h>
+
+struct _circle_
+{
+    float coord_x_;
+    float coord_y_;
+    float radius_;
+};
+
+struct _bbox_
+{
+    float highest_x;
+    float highest_y;
+    float lowest_x;
+    float lowest_y;
+};
+
+typedef struct _circle_ Circle;
+typedef struct _bbox_ BoundingBox;
+
+int main()
+{
+    Circle newcircle;
+    BoundingBox newbox;
+    
+    printf("X-coordinate of the circle's center: ");
+    scanf(" %f",&newcircle.coord_x_); //input 6
+    printf("Y-coordinate of the circle's center: ");
+    scanf(" %f",&newcircle.coord_y_); //input 3
+    printf("Radius of the circle: ");
+    scanf(" %f",&newcircle.radius_); // input 5
+    
+    newbox.highest_x = newcircle.coord_x_ + newcircle.radius_;
+    newbox.highest_y = newcircle.coord_y_ + newcircle.radius_;
+    newbox.lowest_x = newcircle.coord_x_ - newcircle.radius_;
+    newbox.lowest_y = newcircle.coord_y_ - newcircle.radius_;
+    
+    printf("Bounding Box - TL: (%.2f/%.2f)\n", newbox.lowest_x, newbox.highest_y);
+    printf("Bounding Box - TR: (%.2f/%.2f)\n", newbox.highest_x, newbox.highest_y);
+    printf("Bounding Box - BL: (%.2f/%.2f)\n", newbox.lowest_x, newbox.lowest_y);
+    printf("Bounding Box - BR: (%.2f/%.2f)\n", newbox.highest_x, newbox.lowest_y);
+    
+    return 0;
+}

c/isp-ws25/weeklies/week02/w02ex02.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+
+int main()
+{
+  int votes_windows;
+  int votes_linux;
+	
+  printf("Votes for Windows: ");
+  scanf("%d", &votes_windows);
+  
+  printf("Votes for Linux: ");
+  //scanf("%c", &votes_linux);
+  scanf("%d", &votes_linux);
+
+  // Compare the votes and announce the winner
+  //if (votes_windows = votes_linux)
+  if (votes_windows == votes_linux)
+  {
+  	printf("It's a tie between Windows and Linux!\n");
+  } 
+  //else (votes_windows < votes_linux)
+  else if (votes_windows > votes_linux)
+  {
+	  printf("Windows wins!\n");
+  }
+  else
+  {
+    printf("Linux wins!\n");
+  }
+
+  return 0;
+}

c/isp-ws25/weeklies/week02/w02ex03.c

@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <stdbool.h>
+
+/*
+[x] Get user input as char
+[x] check if valid input ([ A- Z][ a-  z])
+[x] check if valid input ([65-90][97-122])
+[x] if valid, print numerical
+[x] if valid, print ASCII
+[x] if invalid, print "[ERROR] not a valid character [A-Z] or [a-z]"
+[x] if invalid, no further output
+[x] request input repeatedly
+[x] print round number at start
+[x] if "Q" or "q", terminate
+[x] regular output when terminating
+[x] print "GOODBYE" before terminating
+*/
+
+unsigned char userchar = 0;
+unsigned int counter = 1;
+
+bool charcheck(unsigned char char_)
+{
+    if((char_ >= 65 && char_ <= 90) || (char_ >= 97 && char_ <= 122)) // A <= %c <= Z OR a <= %c <= z
+    {
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}
+
+void round_start()
+{
+    printf("Round %d:\n", counter);
+    counter++;
+    printf("%s", "Insert character: ");
+}
+
+int main()
+{
+    while(1)
+    {
+        round_start();
+        scanf(" %c", &userchar);
+        
+        if (charcheck(userchar) == true)
+        {
+            printf("%-17s %d\n", "Number:", userchar);
+            printf("%-17s %c\n", "ASCII character:", userchar);
+            //Q == 81, q == 113
+            if (userchar == 81 || userchar == 113) {break;}
+        }
+        else
+        {
+            printf("[ERROR] not a valid character [A-Z] or [a-z]\n");
+            continue;
+        }
+    }
+
+    printf("GOODBYE\n");
+    return 0;
+}

c/isp-ws25/weeklies/week02/w02ex04.c

@@ -0,0 +1,58 @@
+#include <stdio.h>
+
+/*
+- find mistakes in the given source code
+
+[x] ask for lower limit
+[x] ask for upper limit
+[x] calculate sum of all even numbers contained
+[x] calculate average of all even numbers contained
+[x] include lower, exclude upper
+[x] error if not lower < upper: "Upper limit must be higher than lower limit\n"
+[x] terminate on error
+*/
+
+int main()
+{
+	//int lower_limit = 0
+	int lower_limit = 0;
+	int upper_limit = 0;
+
+	printf("Enter lower limit: ");
+	scanf("%d", &lower_limit);
+
+	printf("Enter upper limit: ");
+	//scanf("%d", upper_limit);
+	scanf("%d", &upper_limit);
+
+	//if (lower_limit <= upper_limit)
+	if (upper_limit <= lower_limit)
+	{
+		printf("Upper limit must be higher than lower limit\n");
+		return 1;
+	}
+
+	//int sum;
+	int sum = 0;
+	//int count;
+	int count = 0;
+
+	// Loop to find the sum of even numbers
+	for (int i = lower_limit; i < upper_limit; i++)
+	{
+		//if ((i % 2) = 0)
+		if ((i % 2) == 0)
+		{
+			sum = sum + i;
+			count++;
+		}
+	}
+
+	// Calculate the average of the even numbers
+	//float average = count / sum;
+	float average = sum / count;
+	printf("Sum of even numbers: %d\n", sum);
+	printf("Average of even numbers: %f\n", average);
+
+	return 0;
+}