I have a problem. function should have a proto type. any body help me..
Code:
#include<stdio.h>
#include<string.h>
  main()
{


	char arr[10];
	printf("Enter a string to reverse\n");

       gets(arr);

	streev(arr);

       printf("Reverse of entered string is \n%s\n",arr);

       return 0;
}