Ttykuu

The purpose of the my program is to sort numbers based on the user input. Everything works perfectly, until user wants to input more than 6 data (inp = 5) and I am not sure why is it happening. Can you review it for best coding practices?

Code

#include <stdio.h>
#include <stdlib.h>

int size =0;

void ascSort(int a[size], int size, int temp) 
 for(int i=1; i< size; i++)
 for(int j=i; j>0; j--)
 if(a[j-1]>a[j])
 temp = a[j-1];
 a[j-1] = a[j];
 a[j] = temp;
 
 
 


void descSort(int a[size], int size, int temp) 
 for(int i=1; i< size; i++)
 for(int j=i; j>0; j--)
 if(a[j-1]<a[j])
 temp = a[j-1];
 a[j-1] = a[j];
 a[j] = temp;
 
 
 

int main()
 char inpChar, isContinue='y';
 int inp, temp=0;
 int a[size];

 do 
 printf("How many numbers would you like to sort?n");
 fflush(stdin);
 scanf("%d", &inp);
 size = inp;

 printf("%dn", size);

 for(int i=0; i<size; i++)
 //Below, I am printing 'size' for debugging purposes
 printf("Type %d more numbers to sort ---- '%d'n", inp, size);
 fflush(stdin);
 scanf("%d", &a[i]);
 inp--;
 
 printf("Please input a for ascending order and d for descending ordern");
 fflush(stdin);
 scanf(" %c", &inpChar);

 switch (inpChar) 
 case 'a':
 ascSort(a, size, temp);
 break;
 case 'd':
 descSort(a, size, temp);
 break;
 default: printf("Invalid charactern");
 

 printf("Sorted Array: n" );
 for(int i=0; i<size; i++)
 printf("%dn", a[i]);
 
 printf("Do you want to repeat? Type y/nn");
 fflush(stdin);
 scanf(" %c", &isContinue);
 while(isContinue != 'n');