Write a program to compute the quantity eiS. The constant S can be computed by the formula 4 * atan(1.0) because tan(S/4) = 1. The complex constant i can be written (0.0, 1.0). The built-in function...

Write a program to compute the quantity eiS. The constant S can be computed by

the formula 4 * atan(1.0) because tan(S/4) = 1. The complex constant i can be

written (0.0, 1.0). The built-in function exp(z) is used for raising the mathematical constant e to a power. The sample output should look like