Thread: allocating space dynamically for an array of structures

Hi all I have been given the task of using malloc to allocate space dynamically for a structure of arrays, that must have the integer elements execution_time and process_number and a float element called average_time. Set up an array of structures and show how to access individual elements of the structures within the array. Then finally, use malloc to allocate space dynamically for a structure of the type structure exec_time. I think I am nearly there but I am receiving some errors.

Which are:
Question1.c: In function ‘main’:
Question1.c:21: error: incompatible types in assignment

Code:

         #include <stdlib.h>
         #include <stdio.h>
         typedef struct exec_time
    {
        int et;                
        int pn;                
        float at;            
    }time; 

      int qty, qty2, qty3, i;
     int getnumber();
     void printnumber();
     time pts[4] = {{4,8,0.75}, {5,10,0.00457}, {27,75,3.4}}; 

int main()
{
        time *numbers;
        getnumber();
        numbers = malloc( qty * sizeof(int) ); 
        if(numbers != NULL) 
{
               for(i=0; i<qty ; i++) numbers[i] = i+1;
               for(i=0; i<qty ; i++) 
               printf("%d ", numbers[i]);
               printf("\n");
                       free(numbers); /*free allocated memory*/
                       printnumber();
                       return 0;
}
           else {
                    printf("\nMemory allocation failed - not enough memory.\n");
                    return 1;}
}


int getnumber()
{
     printf("\nHow many ints would you like to store for et? ");
     scanf("%d", &qty);
     printf("\nHow many ints would you like to store for pn? ");
      scanf("%d", &qty2);
     printf("\nHow many floats would you like to store for at? ");
     scanf("%d", &qty3);
                qty = qty + qty2 + qty3; /*adds to total number of integers to be used with malloc and sizeof*/
                return qty;
}

void printnumber() /*simply prints the value of the structure*/
{
      printf("\n\nCode et= execution time, pn =process number, at = average time\n");
      printf("Variable 'time' at element 0 et: %d pn: %d at: %f\n",pts[0].et, pts[0].pn, pts[0].at);
      printf("Variable 'time' at element 1 et: %d pn: %d at: %f\n",pts[1].et, pts[1].pn, pts[1].at);
      printf("Variable 'time' at element 2 et: %d pn: %d at: %f at:\n\n",pts[2].et, pts[2].pn, pts[2].at);
}