C将数字列表读入多个数组

Question

所以我正在尝试编写一个程序，提示用户输入用户希望拥有多少数据集，也就是将有多少数组。然后它会提示用户输入每个数据集中有多少个值以及这些值是什么。最后，它为用户提供了一个选项列表，用于在所需数据集上运行。

当我运行我的代码并选择我想使用的数据集时，它似乎总是出现最后一个数据集并且似乎没有包含该集中的所有值。我只是想知道是否有人可以让我知道我做错了什么，或者至少让我走上正轨。我已经多次查看代码，但无法弄明白。

#include <stdio.h>

int main()
{
    unsigned short int num_sets, set_size, set_desired, command = 0;
    printf("Enter the number of data sets you would like to store: ");
    scanf(" %hu", &num_sets);

    int i = 1, j, sets[1][num_sets], sum, a;

    while(i <= num_sets)
    {
        j = 1;
        printf("Enter the number of elements in data set %hu: ", i);
        scanf(" %hu", &set_size);
        printf("Enter the data for set %hu: ", i);
        while(j < set_size)
        {
            scanf(" %d", &sets[i - 1][j - 1]);
            j++;
        }
        i++;
    }

    printf("Which set would you like to use?: ");
    scanf(" %hu", &set_desired);
    while(set_desired > num_sets){
        printf("There aren't that many data sets, try again: ");
        scanf(" %hu", &set_desired);
    }
    printf("Set #%hu: %hu\n", num_sets, *sets[num_sets - 1]);

    while(command != 7){
        printf("Choose what you would like to do:\n");
        printf("1. Find the minimum value.\n");
        printf("2. Find the maximum value.\n");
        printf("3. Calculate the sum of all the values.\n");
        printf("4. Calculate the average of all the values.\n");
        printf("5. Sort the values in ascending order.\n");
        printf("6. Select a different data set.\n");
        printf("7. Exit the program.\n");
        scanf(" %hu", &command);
        if(command == 1){
            printf("You picked 1!");
        }
        if(command == 2){
            printf("You picked 2!");
        }
        if(command == 3){
            /*printf("You picked 3!");
            for(a = 0; a < set_size; a++){
                sum = sum + *sets[a];
            }
            printf("%d\n", sum);*/
            printf("You picked 3!");
        }
        if(command == 4){
            printf("You picked 4!");
        }
        if(command == 5){
            printf("You picked 5!");
        }
        if(command == 6){
            printf("You picked 6!");
        }
        if(command == 7){
            break;
        }
    }
}

Answer 1

If you are trying to store values in different sets than you need to maintain the number of items in each set separately as you don't know how many elements are there is each set.

The design should be such that:
Set 1 : Number of Elements : Actual values in the array.(Here I am storing the number of items in the set as part of the same array. It will be the first element in each set)

The memory allocation can be done dynamically as you are giving the option to the user to set the number of items per set.

#include <stdio.h>
#include<stdlib.h>
int main()
{
   unsigned short int num_sets, set_size, set_desired, command = 0;
   printf("Enter the number of data sets you would like to store: \n");
   scanf(" %hu", &num_sets);

   int *sets[num_sets];
   int i = 0, k=0,j,sum, a;

   while(i < num_sets)
   {   
      j = 1;
      printf("Enter the number of elements in data set %hu: \n", i+1);
      scanf(" %hu", &set_size);
      sets[i] = (int *) malloc((sizeof(int)*set_size));
      *sets[i] = set_size;
      printf("Enter the values for set %hu\n", i+1);
      while(j <= set_size)
      {   
         scanf(" %d", &sets[i][j]);
         j++;
      }   
      i++;
   }   
   printf("Which set would you like to use?: \n");
   scanf(" %hu", &set_desired);
   while(set_desired > num_sets){
      printf("There aren't that many data sets, try again: \n");
      scanf(" %hu", &set_desired);
   }   
   for(k=1;k<=(*sets[set_desired-1]);k++)
   {   
      printf("Set #%hu: %hu \n", set_desired, *(sets[set_desired-1] + k));
   }  

   while(command != 7){
      printf("Choose what you would like to do:\n");
      printf("1. Find the minimum value.\n");
      printf("2. Find the maximum value.\n");
      printf("3. Calculate the sum of all the values.\n");
      printf("4. Calculate the average of all the values.\n");
      printf("5. Sort the values in ascending order.\n");
      printf("6. Select a different data set.\n");
      printf("7. Exit the program.\n");
      scanf(" %hu", &command);
      if(command == 1){
         printf("You picked 1!");
      }  
      if(command == 2){
         printf("You picked 2!");
      }  
      if(command == 3){
        /*printf("You picked 3!");
          *             for(a = 0; a < set_size; a++){
          *                             sum = sum + *sets[a];
          *                                         }
          *                                                     printf("%d\n", sum);*/
         printf("You picked 3!");
      }
      if(command == 4){
         printf("You picked 4!");
      }
      if(command == 5){
         printf("You picked 5!");
      }
      if(command == 6){
         printf("You picked 6!");
      }
      if(command == 7){
         break;
      }
   }
   return 0;
}