ios - whats the proper way to add up coins and scores? -

whats proper way, i've been using if statements way set wrong believe because scores , coins not being added whole number being replaced if statements...

example:

- (ibaction)btncheck:(id)sender {  nsstring *answer = [_textbox.text stringbyreplacingoccurrencesofstring:@" " withstring:@""]; // block user getting incorrect answer no text in text field if([answer isequaltostring:@""]){  } else  if ([answer isequaltostring:@"q"]) {     // string correct, resign keyboard     _keyboard.hidden = yes;     _textxclear.hidden = yes;     //perfect button     [_closeone sethidden:no];     [_wrongone sethidden:yes];      score = max (score +100, 0);     [scorelabel settext:[nsstring stringwithformat:@"score: %d", score]];     coins = coins +5;    if (score == 100) {coins = 8;}     if (score == 0)  {coins = 0;}     if (score == 4)  {coins = 4;}     if (score == 3)  {coins = 3;}     if (score == 2)  {coins = 2;}     if (score == 1)  {coins = 1;}     [coinslabel settext:[nsstring stringwithformat:@"%d", coins]];   } else {     // not correct.  notify user, or don't     [_wrongone sethidden:no];     score = min(score -5, 0);         [scorelabel settext:[nsstring stringwithformat:@"score: %d", score]]; }  if (score < 100) {     closeonechange.text = @"correct!";      _imagecorp.image = [uiimage imagenamed:@"boxg_25.png"]; } else {     closeonechange.text = @"perfect!";     _imagecorp.image = [uiimage imagenamed:@"telioo.png"]; }   //correct button - perfect button } //perfect & correct button sets hidden - (ibaction)closeone:(id)sender { [_closeone sethidden:yes];    } 

oh , i'd user start @ least 50 coins before game starts, i'm having trouble figuring out how well..

by setting

coins = 8; 

etc. in if statements replace value of coins new value (here: 8) - if want add have write

coins = coins + 8; 

, did counting coins in line

coins = coins + 5; 

some more tips:

you should use if (...) { } else if (...) { } statements instead of using if's - once if statement true, others won't executed anymore.

if want rid of leading , trailing spaces of user input should use

nsstring* inputtext = [_textbox.text stringbytrimmingcharactersinset:[nscharacterset whitespaceandnewlinecharacterset];