add bupt homework

pointers.c

@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <string.h>
+
+int main(void) {
+  // initialize pointer variables
+  char *str;
+	char str1[20];
+	str = &str1;
+	
+	strcpy(str1, str);
+	printf("%s\n", str1);
+	printf("%s\n", str1);
+	printf("%i\n", *str);
+  return 0;
+}

pset2/1-basketball.c

@@ -0,0 +1,55 @@
+#include <stdio.h>
+
+int main(void) {
+
+  // initialize variables
+  int a, b;
+  scanf("%i %i", &a, &b);
+
+  // case 1: one team has reached 21 points. and less than 22 points
+  if (a >= 21 && a <= 22) {
+    if (b < 21) {
+      printf("A win");
+      return 0;
+    } else {
+      printf("error");
+      return 0;
+    }
+  }
+  if (b >= 21 && b <= 22) {
+    if (a < 21) {
+      printf("B win");
+      return 0;
+    } else {
+      printf("error");
+      return 0;
+    }
+  }
+
+  // case 2: one team has more points but less than 21 points.
+  if (a < 21 && b < 21) {
+    if (a > b) {
+      printf("A win");
+      return 0;
+    } else if (a < b) {
+      printf("B win");
+      return 0;
+    }
+  }
+
+  // case 3: one team has more points than 22
+  if (a > 22 || b > 22) {
+    printf("error");
+    return 0;
+  }
+
+  // case 4: scores are equal
+  if (a == b) {
+    if (a < 21 && b < 21) {
+      printf("no result");
+      return 0;
+    }
+  }
+
+  return 0;
+}