What is the command used to open a data file? fopen open fopenf openf Which statement below correctly establishes a file pointer? File * QUAKE FILE * quake; file * QUAKE; none are correct In a C program, the formal and actual parameters that are used between the function prototype and user-defined function must match in number and type. True False The correct C statement to close an input or output file is closef. True False What is the statement required to send output to a data file? printf printff writef fprintf The three loop structures in C are: do/for, do/while, while do/while, while, for while/do, while, for while for, while do, for do The process of writing a user-defined function in C is called refactoring. True False Examine the partial program below. What is the statement CALC called? Invalid prototype macro subprogram #(include #(include double CALC(int, double, double, double, double, double, double}; int main(void) {int count; double x, y, z