Question

Need help problem 9-13

C++ Homework please help

WRITE FUNCTION PROTOTYPES for the following functions. The functions are described below on page 2. (Just write the prototypes) When necessary, use the variables declared below in maino. mm 1.) showMenu m2.) getChoice 3.) calcResult m.) showResult 5.) getInfo mm.) showName 7.) calcSquare 8.) ispositive int main { USE THESE VARIABLES, when needed, to write function prototypes (#1 - #8) double num1 = 1.5; double num2 = 2.5; char choice; double result; string firstName; string LastName; char initial; bool is pos; Also, use the variables to answer questions #9 - #15. NOTE: You can use the same variable in different questions. (1 point eachel Write the FUNCTION DEFINITIONS for the functions described in #1 - #8. Include the first line of the function and body for each definition. 9.) (1 pt.) Write a complete function definition for the showMenu function. (This function should match the prototype in #1). Return type: No value is returned. Parameters: No arguments are passed to the function. Output: A. Multiply a number by 2. Divide a number by 2. This is all of the output from the function. B. +# wrong on this page

Answer 1

//(9)
void showMenu(){
   cout<<"A. Multiply a number by 2.\n";
   cout<<"B. Divide a number by 2.\n";
}
//(10)
char getChoice(){
   char choice;
   cout<<"Enter your choice: ";
   cin>>choice;
   return choice;
}
//(11)
double calcResult(char choice , double num1){
   if(choice == 'A') return num1*2;
   if(choice == 'B') return num1/2;
}
//(12)
void getInfo(string firstName , char initial , string lastName){
   cout<<"First Name: ";
   cin.get();
   getline(cin,firstName);
   cout<<"Initial: ";
   cin>>initial;
   cout<<"Last Name: ";
   cin.get();
   getline(cin,lastName);
}

//(13)
bool isPositive(double num){
   if(num>0) return true;
   return false;
}