如何使用负值或零值格式化复数输出

Please I need to write a program that takes two complex numbers from the user and output their difference. Complex numbers are those numbers in the form of a+bi, where a and b are real numbers known as the real and imaginary parts respectively. Thus, the difference between two complex numbers a1+b1i and a2+b2i is (a1-a2)+(b1-b2)i. I wrote the codes asPlease I need to write a program that takes two