how to add string in iphone differentiate with separator " ,"?

I think it's silly question but i dont know what to do with this.There are lots of order generated each order price string come in this format "123,145,开发者_开发问答234,33,8," this is for one order only can you please tell me how can i add all this value and get the sum of all like "123+145+234+33+8" = 543 .the sum i have to show into tableview for each order. i stuck on these please i develop this stuff for iphone please give me information with code.

Thank You. If the information is not complete let me know.

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Split the string by ,, convert to numbers and sum them up:

NSArray *parts = [myString componentsSeparatedByString:@","];
for (NSString *s in parts) {
    sum += [s integerValue];
}

If your string always has an additional trailing ,, you could e.g. trim it by using:

NSRange trimRange = NSMakeRange(0, [myString length]-1);
NSString *trimmed = [myString substringWithRange:trimRange];

... or by using -stringByTrimmingCharactersInSet: if your needs are more complex.

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A little modification to Georg Fritzsche's answer

NSMutableArray* array = [NSMutableArray arrayWithArray:[myString componentsSeparatedByString:@","]];

//// Remove last object. You might want to make sure it's always the case. ////
[array removeLastObject];

//// Here's a cool trick using Collection Operators. ////
NSNumber* sum = [array valueForKeyPath:@"@sum.intValue"];

NSInteger k = [sum intValue];