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is there a way to references parameters from other functions that are not directly linked

tomtom1 (1)
hey im trying to reference parameters that have been declared in a function to use in another and am having trouble , ive made a simple calculator program , in this program i need to reference the the input code from function(Darkness ) in other functions and am struggling to do this , so it wants me to reference the char symbol i have entered into the input function(Darkness) to the Main function to figure out what multiplication it will do , then i need to reference the input1 and input2 from the input function(darkness) to the multiplication functions , i realize i can merge this functions so i dont have to reference them but my course wants me to be able to reference parameters from one function into multiple others

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 #include <iostream>


void darkness()
{
	char cMathsym;
	float finput1;
	float finput2;
	std::cout << "please enter the maths symbol you would like to use(Press Enter After)" << std::endl;
	std::cin >> cMathsym;
	std::cout << "you chose to Add Please enter 2 number (Press Enter After Each)" << std::endl;
	std::cin >> finput1;
	std::cin >> finput2;
	
	symb( cMathsym )
	


	

	



}

void symb(char& cMathsym2)
{
	float fAnswer;

	switch (cMathsym2)
	{

	case '+':

		fAnswer = Addition(finput1, finput2);

		break;

	case '-':

		fAnswer = Subtract(finput1, finput2);
		break;

	case 'x':


		fAnswer = Multiply(finput1, finput2);
		break;

	case '/':

		fAnswer = Divide(finput1,finput2);
		break;

	}

	std::cout << "the answer is :: " << fAnswer << std::endl;



}






float Multiply(float finput1, float finput2)
{

	return finput1 * finput2;

}
float Subtract(float finput1, float finput2)
{


	return finput1 - finput2;




}
float Divide(float finput1, float finput2)
{


	return finput1 / finput2;




}
float Addition(float finput1, float finput2)
{


	return finput1 + finput2;



}



int main(int argc, char* argv[])
{
	darkness();





	system("pause");
	return 0;
}
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