/*Copyright ElohimTov LLC*/


/*
//Name: ElohimTov Solve Code - Operators - Ojective-C Solution
//Problem: HackerRank - 30 Days of Code - Operators
//Current File: ElohimTovSolve_Operators.(objc).txt
//Compile-able File: ElohimTovSolve_Operators.objc
//Date: 05/17/2021
//Tale: ElohimTov Solve's Solution to HackerRank.com's
//	Operators problem, in Objective-C programming language.
// 	Problem link at https://elohimtov.com/elohimtov.info.
*/


//Objective-C code begins


#import <Foundation/Foundation.h>
#import <objc/Object.h>
#import <objc/objc.h>

@interface NSString (NumberFromString)
- (NSNumber *) numberFromString:(NSNumberFormatter *)formatter;
@end

@implementation NSString (NumberFromString)
- (NSNumber *) numberFromString:(NSNumberFormatter *)formatter {
    NSNumber *number = [formatter numberFromString:[self stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];

    if (number == nil) {
        [NSException raise:@"Bad Input" format:@"%@", self];
    }

    return number;
}
@end

@interface Solution:NSObject
- (void) solve:(NSNumber *)meal_cost tip_percent:(NSNumber *)tip_percent tax_percent:(NSNumber *)tax_percent;
@end

@implementation Solution
/*
 * Complete the 'solve' function below.
 *
 * The function accepts following parameters:
 *  1. DOUBLE meal_cost
 *  2. INTEGER tip_percent
 *  3. INTEGER tax_percent
 */

- (void) solve:(NSNumber *)meal_cost tip_percent:(NSNumber *)tip_percent tax_percent:(NSNumber *)tax_percent
{
    // Write your code here
    NSNumber *hundred = [NSNumber numberWithDouble:100];
    NSNumber *hundredth = [NSNumber numberWithDouble:0.01];
	
    //calculate tip amount    
    double tip_amount = [tip_percent intValue] * [hundredth doubleValue] * [meal_cost doubleValue];
    
    //calculate tax amount   
    double tax_amount = [tax_percent intValue] * [hundredth doubleValue] * [meal_cost doubleValue];
    
    //calculate meal cost
    double total_cost = tip_amount + tax_amount + [meal_cost doubleValue];
    
    //round meal cost to the nearest integer number
    int rounded_cost = lroundf(total_cost);
    
    //print meal cost using printf
    printf("%i", rounded_cost);

   //another way of printing meal cost using nslog
   //NSLog(@"%d", rounded_cost);

}//ends solve function

@end

int main(int argc, const char* argv[]) {
    
    @autoreleasepool {
        
        NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];

        NSData *availableInputData = [[NSFileHandle fileHandleWithStandardInput] availableData];
        NSString *availableInputString = [[NSString alloc] initWithData:availableInputData encoding:NSUTF8StringEncoding];
        NSArray *availableInputArray = [availableInputString componentsSeparatedByString:@"\n"];

        NSUInteger currentInputLine = 0;

        NSNumber *meal_cost = [[[availableInputArray objectAtIndex:currentInputLine] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] numberFromString:numberFormatter];
        currentInputLine += 1;

        NSNumber *tip_percent = [[[availableInputArray objectAtIndex:currentInputLine] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] numberFromString:numberFormatter];
        currentInputLine += 1;

        NSNumber *tax_percent = [[[availableInputArray objectAtIndex:currentInputLine] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] numberFromString:numberFormatter];
        currentInputLine += 1;

        [[[Solution alloc] init] solve:meal_cost tip_percent:tip_percent tax_percent:tax_percent];

    }//ends @autoreleasepool

    return 0;

}//ends main function


//Objective-C code ends


/*Copyright ElohimTov LLC*/