added weekly exercises of isp-ws25

c/isp-ws25/weeklies/week08/w08ex01.c

@@ -0,0 +1,106 @@
+/*
+In this task, you should implement a basketball score
+logger using malloc()/calloc()/realloc() and free():
+
+- Declare struct Player
+  - integer jersey_number_
+  - integer points_
+- print: "Number of players on the team: "
+- user input: number of players as int
+- Allocate memory on heap
+  - all players of a team can be stored
+  - check if memory could be allocated
+    after each malloc()/calloc()/realloc()
+  - If mem-alloc NOK:
+    "Memory allocation failed\n"
+    return 1
+- print: "Jersey number and points for player x: "
+- user input: jersey number & points for each player
+  - first = jersey number
+  - second = points
+  - values separated by space (or any whitespace)
+- show team scoring summary
+  - print list of athletes and their points
+- free allocated memory using free().
+
+Example:
+
+Welcome to the Basketball Score Logger!
+
+Number of players on the team: 6
+Jersey number and points for player 1: 30 37
+Jersey number and points for player 2: 23 29
+Jersey number and points for player 3: 35 7
+Jersey number and points for player 4: 1 20
+Jersey number and points for player 5: 19 41
+Jersey number and points for player 6: 34 12
+
+Team Scoring Summary:
+#30: 37 points
+#23: 29 points
+#35: 7 points
+#1: 20 points
+#19: 41 points
+#34: 12 points
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define fire free
+
+typedef struct _Player_{
+  int jersey_number_;
+  int points_;
+} Player;
+
+Player* initializeTeam(int team_size)
+{
+  Player* new_team = calloc(team_size, sizeof(Player));
+  if ( new_team == NULL ) return NULL;
+
+  return new_team;
+}
+
+void getPlayerStats(Player* team, int team_size)
+{
+  for ( int player = 0; player < team_size; player++ )
+  {
+    printf("Jersey number and points for player %d: ", player + 1);
+    scanf("%d %d", &(team + player)->jersey_number_, &(team + player)->points_);
+  }
+}
+
+void printPlayerStats(Player* team, int team_size)
+{
+  printf("\nTeam Scoring Summary:\n");
+  
+  for ( int player = 0; player < team_size; player++ )
+  {
+    printf("#%d: %d points\n", (team + player)->jersey_number_, (team + player)->points_);
+  }
+}
+
+int main(void)
+{
+  printf("Welcome to the Basketball Score Logger!\n\n");
+
+  printf("Number of players on the team: ");
+  int team_size = 0;
+  scanf(" %d", &team_size);
+
+  Player* team = initializeTeam(team_size);
+  if ( team == NULL )
+  {
+    printf("Memory allocation failed\n");
+    return 1;
+  }
+
+  getPlayerStats(team, team_size);
+
+  printPlayerStats(team, team_size);
+
+  fire(team);
+
+  return 0;
+}