If statements compiler problem

[LEESI]

#include <iostream>
#include <string.h>
using namespace std;


double ConvertTocelcius (float fahrenheit);
unsigned int myStringLengthFunction(const char * str);

int main()
{
    int choice;
    float number, answer;

    cout<<"Would you like to (1) Convert fahrenheit to Celcius or (2) calculate a word lenght? \n";
    cout<<"Plase enter number 1 or 2 \n";
    cin>>choice;
    cout<<"please enter your number \n";
    cin>>number;

    if (choice ==1)
    {
     answer = ConvertTocelcius(float fahrenheit);
    }
else
    {
     answer = myStringLengthFunction (const char * str);
    }

    cout<<"Your answer is" << answer << "\n";
    
    cin.get();
    cin.get();
    return 0;
}
double ConvertTocelcius (float fahrenheit)
{
 return (double)(fahrenheit - 32) * 5.0 / 9.0;
}
unsigned int myStringLengthFunction(const char * str)
{
  return strlen(str);
}

i have two compiler errors 'expected primary expression before 'float' and 'const'

cant see what the problem is though??

[LEESI]

line 22 and line 26 are the errors

[LEESI]

i changed the lines to number, only one error now and thats with line 26,

error: cannot convert 'float' to 'const char*' for argument '1' to 'unsigned int myStringLengthFunction(const char*)'

[LEESI]

#include "5.01.h"
#include <iostream>
#include <string.h>


using namespace std;

int main()
{
    menu();
   // cin.get();
    cin.get();
    return 0;
}
void menu()
{
    int choice;
    double ConvertToCelcius(float fahrenheit);
    float Fahrenheit;
    float answer;
    double result  = ConvertToCelcius(Fahrenheit);
    char somechar;

    cout<<"Please select a number \n";
    cout<<"Number 1 = Convert Fahrenheit to Celsius \n";
    //cout<<"Number 2 = Calculate a word lenght \n";
    cout<<"Press 3 to Exit \n";
    cin>>choice;

    switch (choice)
{
case 1: //Fahrenheit
    cout<<"Please enter a Fahrenheit \n";
    cin>> Fahrenheit;
    answer = result;
    break;
//case 2: //string length

// string lenght here?????
case 3:
     return;
     default:
     cout<<"wrong entry \n";
     menu();
}
cout<<"The answer is" << answer <<"\n";
cout<<"Press enter/return key to continue \n";
cin>>somechar;
menu();
}
double ConvertToCelcius(float fahrenheit)
{
return (double)(fahrenheit - 32) * 5.0 / 9.0;
}
unsigned int myStringLengthFunction(const char * str)
{
 return strlen(str);
}

tried another aproach,still having trouble with the string function, the 5.01a.h file is only a saved note pad with void main(); saved to it

really cant get either to work

[LEESI]

#include "5.01.h"
#include <iostream>
#include <string.h>


using namespace std;

int main()
{
    menu();
    //cin.get();
    //cin.get();
    return 0;
}
void menu()
{
    int choice;
    char somechar;
    double ConvertToCelcius(float fahrenheit);
    float answer;

    float Fahrenheit;
    double result  = ConvertToCelcius(Fahrenheit);

    unsigned int myStringLengthFunction(const char * str);
    char anywordstring[100];
    int mysize;
    mysize=myStringLengthFunction(anywordstring);


    cout<<"Please select a number \n";
    cout<<"Number 1 = Convert Fahrenheit to Celsius \n";
    cout<<"Number 2 = Calculate a word lenght \n";
    cout<<"Press 3 to Exit \n";
    cin>>choice;

    switch (choice)
{
case 1: //Fahrenheit
    cout<<"Please enter a Fahrenheit \n";
    cin>> Fahrenheit;
    answer = result;
    break;
case 2: //string length
    cout<<"Please enter a word \n";
    cin.getline(anywordstring,100);
    answer = mysize;
    break;

case 3:
     return;
     default:
     cout<<"wrong entry \n";
     menu();
}

    cout<<"The answer is" << answer <<"\n";
    cout<<"Press enter/return key to continue \n";
    cin>>somechar;
    menu();
    
}
double ConvertToCelcius(float fahrenheit)
{
return (double)(fahrenheit - 32) * 5.0 / 9.0;
}
unsigned int myStringLengthFunction(const char * str)
{
 return strlen(str);
}

this compiles ok, but when you pick option 2, it spits out the answer right away with a random number and/or letter