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#import <Foundation/Foundation.h>

@interface SampleClass:NSObject
/* method declaration */
- (int)odd_count:(int)n;
@end

@implementation SampleClass
- (int) odd_count:(int) n{
  //your code here
  int odd_counter = 0;
  
  for (int i = 1; i < n; i=i+2)  { 
        // Numbers that are divisible by 2 
        if (i % 2 != 0) 
            odd_counter++;
    } 
  return odd_counter;
}

@end