Can anyone help me!!!???

The intrustions for this program are bellow...I am not sure wat code to enter so that i can convert my inputed values for ft., inches, meters, cm......can anyone show me the code to finish this program.....

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The function length_to_metric should read the length in feet and inches and output the equivalent length in meters and centimeters. To accomplish this task, length_to_metric should use three additional functions: one to input the values, one to do the conversion, and one to output the results. Similarly, the function length_to_us should read the length in meters and centimeters and output the equivalent length in feet and inches. To accomplish this task, length_to_us should use three additional functions: one to input the values, one to do the conversion, and one to output the results. (Note: there are 0.3048 meters in a foot, 12 inches in a foot, and 100 centimeters in a meter.)

The function weight_to_metric should read the weight in pounds and ounces and output the equivalent length in kilograms and grams. To accomplish this task, weight_to_metric should use three additional functions: one to input the values, one to do the conversion, and one to output the results. Similarly, the function weight_to_us should read the weight in kilograms and grams and output the equivalent weight in pounds and ounces. To accomplish this task, weight_to_us should use three additional functions: one to input the values, one to do the conversion, and one to output the results. (Note: there are 2.2046 pounds in a kilogram, 1000 grams in a kilogram, and 16 ounces in a pound.)

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#include <iostream>
using namespace std;
double input_number(int feet, double inches)
{
	cout << "please enter the number of feet" << endl;
	cin >> feet;
	cout << "please enter the number of inches" << endl;
	cin >> inches;
	return 1;
}
void do_conversion(int feet, double inches, double final_m, double final_cm)
{
	
	final_m = feet * .3048;
	final_cm = inches * 2.54;
}
double output_number(double final_m, double final_cm)
{
	cout << "You values conver to:" << endl;
	cout << final_m << "meters and" << final_cm << "cm." << endl;
	cout << endl;
	return 1;
}
	
double convert_lengths(double choice, double value, double lengths)
{
	return 1;
}

double convert_weights(double choice, double value, double weights)
{
	return 2;
}
double length_to_metric(double choice_2, double value_2, double metric, int feet, double inches)
{
	cout << "You have choosen to convert ft/in. to m/cm." << endl;
	metric = input_number(feet, inches);
	return 1;
}
double length_to_us(double choice_2, double value_2, double us)
{
	cout << "You have choosen to convert m/cm to ft/in.." << endl;
	return 2;
}
double weight_to_metric(double choice_2, double value_2, double metric)
{
	cout << "You have choosen to convert lbs/oz. to kg/g." << endl;
	return 1;
}
double weight_to_us(double choice_2, double value_2, double metric)
{
	cout << "You have choosen to convert kg/g to lbs/oz." << endl;
	return 2;
}
void introduction()
{
	cout << "This program converts lengths and weights." << endl;
	cout << "Press 1 to convert lengths." << endl;
	cout << "Press 2 to convert weights." << endl;
	cout << "Press 0 to end the program." << endl;
}

void get_input(double& choice)
{

	cout << endl;
	cout << "What would you like to convert (length or weight)? Please enter your choice: ";
	cin >> choice;
		
}

void get_output(double choice, double lengths, double weights, double& value, double choice_2, 
	double value_2, double metric, double us, int feet, double inches)
{
	if(choice == 1)
	{
		value = convert_lengths(choice, value, lengths);
		cout << "You choose lenghts." << endl;
		cout << endl;
		cout << "Would you like to convert ft./in. to m/cm? If so press 1" << endl;
		cout << "If you would like to convert m/cm to ft./in.? if so press 2." << endl;
		cout << "If you would like to stop converting length measurments press 0." << endl;
		cout << "Enter:";
		cin >> choice_2;
		if(choice_2 == 1)
		{
			cout << "You pressed 1" << endl;
			value_2 = length_to_metric(choice_2, value_2, metric, feet, inches);
		}
		if(choice_2 == 2)
		{
			cout << "You pressed 2" << endl;
			value_2 = length_to_us(choice_2, value_2, metric);
		}
	}
	if(choice == 2)
	{
		value = convert_weights(choice, value, weights);
		cout << "You choose weights." << endl;
		cout << endl;
		cout << "Would you like to convert lbs/oz. to kg/g? If so press 1" << endl;
		cout << "If you would like to convert kg/g to g/kg? if so press 2." << endl;
		cout << "If you would like to stop converting weight measurments press 0." << endl;
		cout << "Enter: ";
		cin >> choice_2;
		if(choice_2 == 1)
		{
			cout << "You pressed 1" << endl;
			value_2 = weight_to_metric(choice_2, value_2, metric);
		}
		if(choice_2 == 2)
		{
			cout << "You pressed 2" << endl;
			value_2 = weight_to_us(choice_2, value_2, us);
		}
	}
	if(choice == 0)
	{
		cout << "Program Terminated." <<endl;
	}

}

int main()
{
	double choice(1), value(0), lengths(0), weights(0), choice_2(1), value_2(0), metric(0), us(0), feet(0), inches(0), final_m(0), final_cm(0);

	introduction();

	while (choice != 0 && choice_2 != 0)
	{
		get_input(choice);
		get_output(choice, lengths, weights, value, choice_2, value_2, metric, us, feet, inches);
	}
	input_number(feet, inches);
	do_conversion(feet, inches, final_m, final_cm);
	output_number(final_m, final_cm);
	return 0;
}



What do u want ? do u want the code to convert feet to invhes , etc... ?
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