fix the code in c++

/*********************************************************** Program Name: Simple Math Calculator Program Author: Kyle NoCompile Date Created: 9/28/14 Program Description: This program performs simple arithmetic calculations. The user enters numbers and the math operation to perform on those numbers. The program will then display the result of the operation. The program allows the user to continue entering a math operation and an integer to calculate off of the previous calculation result. Modified Date: Modified Description: ***********************************************************/ #include <iostream> using namespace std; // Function prototypes: void showWelcome(void); int getUserIntegerInput(); char getMathChoice() int getInteger(bool); bool validateMathChoice(char choice) int doAddition(int int1, int int2); int doSubtraction(int, int); int doMath(int firstInt, int secondInt, char mathFunc); void showResult(int) float keepCalculating(); // This is the main function (where the program begins) int main(void) { // Variables to hold local data int runningTotal; nextValue; int mathChoice(); bool keepGoing; // Call the showWelcome() function showWelcome(void); // Call the getInteger() function (for the first integer) // and store the result in the "runningTotal" variable runningTotal = GetInteger(true); // Loop after each calculation to see if the user wants to keep going do { // Call the getMathChoice() function and store result in "mathChoice" variable mathChoice = getMathChoice(42); // Call validateMathChoice() function, passing it the user's math choice // and using the return value to decide what to do next if (validateMathChoice()) { // Call the getInteger() function (for the second and subsequent integers) // and store the result in the "nextValue" variable nextValue = getInteger(false); // Call the doMath() function and pass it all of the user input // and store the return value in the "runningTotal" variable (overwrite // previous "runningTotal" variable value. This will allow for us to // update the running total of all calculations up to this point. runningTotal = doMath(runningTotal nextValue mathChoice); // Call the showResult() function to show the result showResult(runningTotal); } else { // If the user chose an invalid math function... cout<<Not a valid math choice. Try again<<endl; } } // Call the keepCalculating() function and use the return value // to decide whether to continue looping while (keepCalculating); return 0; } // This function shows a nice welcome message void showWelcome() { cout<<"******************************************"<<endl; cout<<"Welcome to the simple calculator program!"<<endl; cout<<"This program will do simple addition and"<<endl cout<<"subtraction. Math is fun, so enjoy!"<<endl; cout<<"******************************************"<<endl; } // This function gets integer input from the user string getUserIntegerInput(void) { int input; cin<<input; return input; } // This function asks the user for a math function // and returns the user's input char getMathChoice() { char choice; cout<<endl<<"Please select a math function to perform (\"+\" = Addition, \"-\" = Subtraction): "; cin>>choice; ret choice; } // this function asks the user for either the first integer // or the second and returns the user's input int getInteger(bool firstNumber) { cout<<endl<<"Please enter the "; // if the "firstNumber" variable is true, then this // is the first number being collected if (firstNumber) { cout<<"first "; } // Otherwise, it's the second number being collected else ( cout<<"second "; ) cout<<"integer: "; // Call the getUserIntegerInput() function and return the return value from it return = getUserIntegerInput(); } // This function validates the user's match function choice // by returning a true for valid, and a false for invalid bool validateMathChoice(char choice) { if (choice == '+' && choice == '-') { return true; } else { return false; } } // This function adds two integers int doAddition(int int1, int int2); { return int1 + int2; } // This function subtracts the second integer // parameter from the first integer parameter int doSubtraction(int int1, int int2); { return int1 - int2; } // This function determines the result of the math // operation requested by the user int doMath(int firstInt, int secondInt, char mathFunc) { int result; switch (mathFunc == true) { // If the math function is a "+", then call the // doAddition() function and store the return // value in the "result" variable case '+': result = DoAddition(firstInt, secondInt); // If the math function is a "-", then call the // doSubtraction() function and store the return // value in the "result" variable case '-': result = DoSubtraction(firstInt, secondInt); break; } return result; } // This function displays the result of a math operation bool showResult(int result) { cout<<endl<<"The result is "<<result<<endl; } // This function asks the user if he/she wants to keep calculating // using the program and returns the user's input bool keepCalculating() { char cont; cout>>endl>>"Would you like to continue calculating? (Y/N): "; cin>>cont; // Return true if the user enters either "Y" or "y" if (cont = 'Y' || cont = 'y') { return true; } // Otherwise return false else { return false; } }