macOS I have problem in Three digit numbers in Iphone using Cocoa

[vavdiyaharesh]

I m doing one calculator application in Iphone using cocoa i have done successfully addition of two number.

but problem is whenever i m trying to add number with 3-digit number, my iphone get hang and its perfectly working with 2-digit number.

So can anyone tell me solution of my problem.

Thankx in advance.

I m doing one calculator application in Iphone using cocoa i have done successfully addition of two number.

but problem is whenever i m trying to add number with 3-digit number, my iphone get hang and its perfectly working with 2-digit number.

Code for this is like

-(IBAction)push_plus
{
stringRes = txtResult.text;
txtResult.text=@"";

}
-(IBAction)push_equal
{

string2=txtResult.text;
int number1 = [stringRes intValue];
int number2 = [string2 intValue];
int numResult = number1+number2;
NSString *str = [NSString stringWithFormat"%d", numResult];
txtResult.text=str;
}

So can anyone tell me solution of my problem.

Thankx in advance.