Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are–by definition–not smart enough to debug it. Brian Kernighan
A complex number is a combination of real and imaginary numbers. A+Bi is a complex number where A is the real number and B is the imaginary number.
A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit,
3 - real number
4 - imaginary number
Add:8.0+6.0i + 4.0+5.0i = 12.0+11.0i Subtract:8.0+6.0i - 4.0+5.0i = 4.0+1.0i Multiply:8.0+6.0i * 4.0+5.0i = 2.0+64.0i