error:declaration terminated incorrectly

Question

#include<stdio.h>
#include<conio.h>

void insert(int arr[]);

# define LEN 10

int count;

void main(void)
{
  clrscr();
  int arr[]={20,21,22,23,24};
  insert(arr);
  getch();
}

void insert(int arr[])
{
  if(size==count)
    printf("no space");
    return;

  int index,value;
  printf("enter index and value");
  scanf("%d %d",index,value);
  for(int i=count-1;i>=index;i--)
  {
    arr[i+1]=arr[i];
    arr[i]=value;
    count++;
  }
  printf("insert succcess");

}

Answer 1

Compile with C99 or GNU extensions.

-- or --

Place your declarations before any statements or expressions.

Answer 2

You have an incorrect semicolon on this line:

void main(void);

and you forgot a semicolon on this line:

 arr[i=1]=arr[i]

Your code also has other errors. For example, this:

 if(size==count)
 printf("no space");
 return;

will always return. It is equivalent to:

 if(size==count) {
   printf("no space");
 }
 return;

and is a good example of why you should get in the habit of indenting your code properly and get in in the habit of using braces for conditionals.

Additionally, size has not been declared anywhere. And finally, this:

 scanf("%d %d",index,value);

isn't going to do what you want. You need to give scanf pointers to the integers you want to store the values in, not the values of those integers.