How to evaluate the string equation in ios

Question

Is there way to solve the string equations in ios ?

For example

Input:

NSString * str =@\"1+2\";

Output:

<

Answer 1

I think you need to subString your string, and store each number in a new NSstring(integerValue) or in Integer variable.

example:

NSString *str = @"1+2";
    int x = [[str substringToIndex:1]integerValue];
    int y = [[str substringFromIndex:1]integerValue];
    int z = x+y;
    NSLog(@"Sum === %d",z);