19 Which of the following correctly declares an array? Select one: out of O a int array: O b. array array[10]: O c int array[10]: O d array(10): 21 What will be the output of the following C++ code? int flint &x, int c) ered ed out of C=C- 1; if (c == 0) return 1; on x = x+ 1; return fox, c) *x maino int a = 4 cout