Suppose that alpha is a double variable. What is the value of alpha after the following statement executes: alpha = 14.0 + double (15/2); 1. a. alpha = 21.0 b. alpha = 21.5 c. alpha = 22.0. d. None of these. 2. What is the output of the following C++ code? int n=0; cout > num; for(int j = 1 ; j Suppose that alpha is a double variable. What is the value of alpha after the following statement executes: alpha = 14.0 + double (15/2); 1. a. alpha = 21.0 b. alpha = 21.5 c. alpha = 22.0. d. None of these. 3 2. What is the output of the following C++ code? int n=0; cout > num; for(int j = 1 ; j