Array Manipulation Menu C Programming -

i have menu user has enter number following case manipulation array. menu has done in order. example user must first set size of array , pass elements array in separate module.

1. 1- enter size of array 2- enter array elements 3- sort array 4- find number within array 5- print array
   6-reverse print array 7- quit

please enter choice: 3 array not initialized yet!

this code far. having trouble on initializing array , entering elements. once done sure can rest:

int sizearray(); int *enterelements(int size, int *anarray);   int main(){     int choice;      int tempsize;     int marray[100]; //initialize array     do{         printf("1 - enter size of array\n");         printf("2 - enter array elements\n");         printf("3 - sort array\n");         printf("4 - find number within array\n");         printf("5 - print array\n");         printf("6 - reverse print array\n");         printf("7 - quit\n");         printf("\n");         printf("please enter choice: ");         scanf("%d", &choice);          switch (choice){         case 1:             int tempsize = sizearray();          case 2:              if (tempsize != 0){                 enterelements(tempsize);              }             else{                 printf("you should first set size of array\n");              }         default:             if (choice < 1 || choice > 7)                 printf("invalid choice please choose again\n");         };     } while (choice != 7);  }  int sizearray(){     int size = 0;      printf("what size of array(1-20)? ");      scanf_s("%d", size);      if (size > 20 || size < 1){         printf("array size should between 1 , 20 ");      }     return size;  }  int *enterelements(int size){     int = 0;      (i = 0; < size; i++)     {         printf("enter array element %d :", i);         scanf_s("%d", &anarray[i]);      } } 

i think enterelements function should this:

void enterelements(int *anarray, int size) {  //your code here } 

and call function as:

enterelements(marray, tempsize); 

also within case shouldn't declare new int tempsize variable, overrides 1 before loop.