CSC264 Computer Org & Arch II - Problem Set: C Structs

Problem Set: C Structs

   struct fraction
   {
      int numerator;
      int denominator;
   };

```
   struct fraction third = {1, 3};
```

   typedef struct fraction
   {
      int numerator;
      int denominator;
   } FRACTION;

   FRACTION twothird;
   twothird.numerator = 2;
   twothird.denominator = 3;

   printf("%d/%d", twothird.numerator, twothird.denominator);

   void printfrac(FRACTION thefrac)
   {
      printf("%d/%d", thefrac.numerator, thefrac.denominator);
   }

   FRACTION addfracs(FRACTION first, FRACTION second)
   {
      FRACTION sum;
      sum.denom = first.denominator * second.denominator;
      sum.numerator = first.numerator * second.denominator +
                      second.numerator * first.denominator;
      return sum;
   }

   int main()
   {
      FRACTION one, two, sum;
      printf("Enter numerator and denominator");
      scanf("%d %d", &one.numerator, &one.denominator);
      printf("Enter numerator and denominator");
      scanf("%d %d", &two.numerator, &two.denominator);

      sum = addfracs(one, two);
      printf("The fractions are: ");
      printfrac(one);
      printf(" and ");
      printfrac(two);
      printf("\nThe sum is ");
      printfrac(sum);
   }

   typedef struct hitter
   {
        char name[41];
        char team[41];
        int appearances;
        int walks;
        int hits;
   } HITTER;

   void printHitter(HITTER hitter)
   {
      printf("\nName: %s\n", hitter.name);
      printf("Team: %s\n", hitter.team);
      printf("   appearances: %d\n", hitter.appearances);
      printf("   walks:       %d\n", hitter.walks);
      printf("   hits:        %d\n", hitter.hits);
   }

   int battingAvg(HITTER hitter)
   {
     int avg = (float) hitter.hits / (hitter.appearances - hitter.walks) * 1000;
     return avg;
   }

   void printTeam(HITTER hitter[], int size, char team[])
   {
      int i;
      for (i = 0 ; i < size ; i++)
         if (strcmp(hitter[i].team, team) == 0)
            printHitter(hitter[i]);
   }

   int main(int argc, char *argv[])
   {

      HITTER players[5];
      char teamname[41];
      int i;

      // players+i or &players[i]
      // *(players+i) or players[i]



      for (i = 0 ; i < 5 ; i++) {
         printf("Name: ");
         gets(hitter.name);
         printf("Team: ");
         gets(hitter.team);
         printf("Plate Appearances: ");
         scanf("%d",&hitter.appearances);
         printf("Walks: ");
         scanf("%d",&hitter.walks);
         printf("Hits: ");
         scanf("%d",&hitter.hits);
         // read the newline left after reading the number of hits
         ch = getchar();


      for (i = 0 ; i < 5 ; i++)
      {
         printHitter(*(players+i));
         printf("Average: %d\n", battingAvg(*(players+i)));
      }

      printf("enter a team name: ");
      fgets(teamname, 41, stdin);
      printTeam(players, 5, teamname);

      return 0;
   }