iphone - Invalid operands to binary expression ('double' and 'double') objective-c issue -

iphone - Invalid operands to binary expression ('double' and 'double') objective-c issue -

invalid operands binary look ('double' , 'double') objective-c issue

-(double)performoperationwith:(double *)operand1 and:(double *)operand2 { double result = 0.0; result = operand1 + operand2; homecoming result; }

they're pointers, should dereference them:

result = *operand1 + *operand2;

or alter function parameters:

-(double)performoperationwith:(double )operand1 and:(double )operand2 {...}

iphone ios objective-c