on these lines
void exch(int a[], int nb);
void ins_sort(int nb, int ar[]);
void shell_sort(int nb, int ar[]);
void bubbles(int a[], int nb);
void key_wait(void);
void swap (int *a, int * b);
void quicks (int low, int high, int array[]);
i get not in formal parameter list
can anyone help me fix these errors!!!!