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

What you can do is, You can get the components of the string separated by the sign "+" using this method and then you will get the array of components i.e. 1,2.

NSArray* foo = [str componentsSeparatedByString: @"+"];

int result = [[foo objectAtIndex:0] integerValue] + [[foo objectAtIndex:1] integerValue];

and then you can use the integer value for those two elements and add them and store the result in an integer variable.