我的代码中的switch语句出错.(c++）

我在这个棒球计算器中的switch语句有一个错误。错误显示："控制转移绕过初始化："

switch语句用于您希望在此程序中进行的计算类型，如：

基本百分比击球平均数等等。

// Baseball Stat.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <iostream>
#include <string>
#include <cmath>
using namespace std;
char menu_choice;
// Batting average formula.
float b_average(float hits, float bats) {return hits/bats;};
// On base percentage formula
float OBP(float hits, float walks, float Hit_by_Pitch, float bats, float sac_flys) {return (hits+walks+Hit_by_Pitch) / (bats+walks+Hit_by_Pitch+sac_flys);};
// Strikeout Ratio Formula 
float Strikeout_ratio(float strikeouts, float bats) {return strikeouts/bats;};
// Fielding Average Formula 
float fielding_average(float putouts, float assists, float errors) {return (putouts+assists) / (putouts + assists+errors);};
// Range Factor Formula
float range_factor(float putouts , float assists, float defins) {return (putouts+assists) * 9 / defins;};
// Pythagorean Expectation Formula
float pyt_expectation(double runs, double runs_allowed) {return (pow(runs, 1.83) / (pow(runs, 1.83) + pow(runs_allowed, 1.83))) * 100;};
int _tmain(int argc, _TCHAR* argv[])
{
    cout << "BASEBALL STATISTICS CALCULATORn";
    cout << "nWhat do you want to calculate?n""nA.BATTING AVERAGEn""nB.ON BASE PERCENTAGE (OBP)n""nC.STRIKEOUT RATIOn""nD.FIELDING AVERAGEn""nE.RANGE FACTORn""nF.BASEBALL GAME SIMULATORn";
    cin >> menu_choice;

这是错误：

    switch(menu_choice)
    {
    case 'A':
        // Variables for First Player's Batting Average.
        int atBatsBA;
        int numHitsBA;
        // Variables for Second Player's Batting Average.
        int second_atBatsBA;
        int second_numHitsBA;
        cout << "nBATTING AVGnn";
        cout << "Player #1 At bats:n";
        cin >> atBatsBA;
        cout << "Player #1 Hits:n";
        cin >> numHitsBA;
        cout << "Player #2 At Bats:n";
        cin >> second_atBatsBA;
        cout << "Player #2 Hits:n";
        cin >> second_numHitsBA;

        cout << "nPlayer #1's Batting Average is:n" << b_average(numHitsBA, atBatsBA) << endl;
        cout << "nPlayer #2's Batting Average is:n" << b_average(second_numHitsBA, second_atBatsBA) << endl;
        break;
    case 'B':
        // Variables for First Player's OBP
        int atBatsOBP;
        int hitsOBP;
        int walksOBP; 
        int Hit_By_PitchOBP; 
        int sa_flysOBP;
        // Variables for Second Player's OBP
        int second_atBatsOBP;
        int second_hitsOBP;
        int second_walksOBP;
        int second_Hit_By_PitchOBP;
        int second_sa_flysOBP;

        cout << "nOBP PERCENTAGEn";
        cout << "nPlayer #1 At bats:n";
        cin >> atBatsOBP;
        cout << "Player #1 Hits:n";
        cin >> hitsOBP;
        cout << "Player #1 Walks:n";
        cin >> walksOBP;
        cout << "Player #1 Hits by Pitch:n";
        cin >> Hit_By_PitchOBP;
        cout << "Player #1 Sac Flys:n";
        cin >> sa_flysOBP;
        cout << "Player #2 At bats:n";
        cin >> second_atBatsOBP;
        cout << "Player #2 Hits:n";
        cin >> second_hitsOBP;
        cout << "Player #2 Walks:n";
        cin >> second_walksOBP;
        cout << "Player #2 Hits by Pitch:n"; 
        cin >> second_Hit_By_PitchOBP;
        cout << "Player #2 Sac Flys:n";
        cin >> second_sa_flysOBP;
        cout << "nPlayer #1's OBP:n" << OBP(hitsOBP,walksOBP,Hit_By_PitchOBP,atBatsOBP,sa_flysOBP) << endl;  
        cout << "nPlayer #2's OBP:n" << OBP(second_hitsOBP,second_walksOBP,second_Hit_By_PitchOBP,second_atBatsOBP,second_sa_flysOBP) << endl;
        break;
    case 'C':
        // Variables for First Player's Strikeout Ratio 
        int atBatsSOR;
        int strikeoutsSOR;
        // Variables for Second Player's Strikeout Ratio 
        int second_atBatsSOR;
        int second_strikeoutsSOR;
        cout << "nSTRIKEOUT RATIONn";
        cout << "nPlayer #1 At bats:n";
        cin >> atBatsSOR;
        cout << "nPlayer #1 Strikeouts:n";
        cin >> strikeoutsSOR;
        cout << "nPlayer #2 At bats:n";
        cin >> second_atBatsSOR;
        cout << "nPlayer #2 Strikeouts:n";
        cin >> second_strikeoutsSOR;
        cout << "nPlayer #1's Strikeout Ratio:n" << Strikeout_ratio(strikeoutsSOR,atBatsSOR) << endl;
        cout << "nPlayer #2's Strikeout Ratio:n" << Strikeout_ratio(second_strikeoutsSOR,second_atBatsSOR) << endl;
        break;
    case'D':
        // Variables for First Player's Fielding Average.
        int putoutsFA;
        int assistsFA;
        int errorsFA;
        // Variables for Second Player's Fielding Average.
        int second_putoutsFA;
        int second_assistsFA;
        int second_errorsFA;
        cout << "nFIELDING AVERAGEn";
        cout << "nPlayer #1's putouts:n";
        cin >> putoutsFA;
        cout << "Player #1's assists:n";
        cin >> assistsFA;
        cout << "Player #1's errors:n";
        cin >> errorsFA;
        cout << "Player #2's putouts:n";
        cin >> second_putoutsFA;
        cout << "Player #2's assists:n";
        cin >> second_assistsFA;
        cout << "Player #2's errors:n";
        cin >> second_errorsFA;

        cout << "nPlayer #1's Fielding Average:n" << fielding_average(putoutsFA, assistsFA, errorsFA) << endl;
        cout << "nPlayer #2's Fielding Average:n" << fielding_average(second_putoutsFA, second_assistsFA, second_errorsFA) << endl;
        break;
    case 'E':
        // Variables for First Player's Range Factor.
        int putoutsRF;
        int assistsRF;
        int defensive_inningsRF;
        // Variables for Second Player's Range Factor.
        int second_putoutsRF;
        int second_assistsRF;
        int second_defensive_inningsRF;

        cout << "nRANGE FACTORn";
        cout << "nPlayer #1's putouts:n";
        cin >> putoutsRF;
        cout << "Player #1's assists:n";
        cin >> assistsRF;
        cout << "Player #1's Defensive Innings Played:n";
        cin >> defensive_inningsRF;
        cout << "Player #2's putouts:n";
        cin >> second_putoutsRF;
        cout << "Player #2's assists:n";
        cin >> second_assistsRF;
        cout << "Player #2's Defensive Innings Played:n";
        cin >> second_defensive_inningsRF;

        cout << "nPlayer #1's Range Factor:n" << range_factor(putoutsRF, assistsRF, defensive_inningsRF) << endl;
        cout << "nPlayer #2's Range Factor:n" << range_factor(second_putoutsRF, second_assistsRF, second_defensive_inningsRF) << endl;
        break;
    case'F':
        // Variables for first team's batting average.
        string ftname;
        int atbatsTBA;
        int hitsTBA;
        // Variables for second team's batting average.
        string stname;
        int second_atbatsTBA;
        int second_hitsTBA;

        cout << "nBASEBALL GAME SIMULATORn";
        cout << "nPlease enter the first team's name:n";
        cin >> ftname;
        cout << "nPlease enter the second team's name:n";
        cin >> stname;
        cout << "nPlease enter the first teams' total at bats:n";
        cin >> atbatsTBA;
        cout << "nPlease enter the first teams's total hits:n";
        cin >> hitsTBA;
        cout << "nPlease enter the second team's total at bats:n";
        cin >> second_atbatsTBA;
        cout << "nPlease enter the second team's total hits:n";
        cin >> second_hitsTBA;
        cout << "n" << ftname << " 's Batting Average is:n" << b_average(atbatsTBA, hitsTBA) << "n";
        cout << "n" << stname << " 's Batting Average is:n" << b_average(second_atbatsTBA, second_hitsTBA) << "n";
        int TBA;
        int TBA2;
        TBA = b_average(atbatsTBA, hitsTBA);
        TBA2 = b_average(second_atbatsTBA, second_hitsTBA);
        if(TBA>TBA2){
            cout << ftname <<" Wins!!n";
        }
        else if(TBA<TBA2){
            cout << stname << " Wins!!n";
        }
        else{
            cout << "It's a draw!!n";
        }
        break;
    default :
        cout << "Please enter a valid optionn";
    }

    return 0;
}