我想制作一个简单的程序，将板球运动员的信息存储到文件中并取回它，但我遇到了cin.getline的问题。当我使用cin.getline作为我的代码时，名称变量没有被读取。它只是跳过name变量并移动到团队变量上。当我使用cin时，每个东西都运行良好。
#include<iostream>
#include<cstdlib>
#include<fstream>
#include<cstring>
using namespace std ;
static int count ;
char format[6][12]={"Test","ODI","T20I","First class","List A","T20"} ;
class profile
{
private:
//General Info
char name[30] ;//Name of player
char team[20] ;//Team the player represents
char role[30] ;//Role of the player in the team
char batstyle[25] ;//Batting Style
char bowlstyle[25] ;//Bowling Style
int matches[6] ;//Number of matches played by the player
int dobd,dobm,doby ;//Date of birth of the player in dd/mm/yyyy format
//Batting stats
int batinns[6] ;//Number of innings played
int notouts[6] ;//Number of not outs
int batruns[6] ;//Number of runs scored
int highsc[6] ;//Highest score
int cen[6] ;//Number of centuries scored
int fif[6] ;//Number of fifties scored
int four[6] ;//Number of fours hit
int six[6] ;//Number of sixes hit
float batave[6] ;//Batting average
float batstr[6] ;//Batting strike rate
//Bowling stats
int bbiruns[6],bbiwkts[6] ;//Best bowling figures in an innings
int bbmruns[6],bbmwkts[6] ;//Best bowling figures in a match
int bowlinns[6] ;//Number of innings played
int bowlruns[6] ;//Number of runs conceeded
int wkts[6] ;//Number of wickets taken
int fivewkts[6] ;//Number of five wicket haults
int tenwkts[6] ;//Number of ten wicket haults
float bowlave[6] ;//Bowling average
float bowlstr[6] ;//Bowling strike rate
float eco[6] ;//Economy of the bowler
//Fielding stats
int catches[6] ;//Number of catches taken
int stumping[6] ;//Number of stumpings done
public:
//Write functions:
//Function to write the general information
void setgendata()
{
cout<<"Enter the full name of the player: "<<endl ;
cin.getline(name,30) ;
cout<<"Enter the team represented by the player:"<<endl ;
cin.getline(team,20) ;
cout<<"Enter the date of birth in (dd mm yyyy) format:"<<endl ;
cin>>dobd>>dobm>>doby ;
cout<<"Enter the role of the player:"<<endl ;
cin>>role ;
cout<<"Enter the batting style of the player:"<<endl ;
cin>>batstyle ;
cout<<"Enter the bowling style of the player:"<<endl ;
cin>>bowlstyle ;
}
void setbatdata()
{
//Function to write batting stats
for(int k=0;k<6;k++)
{
cout<<"Enter the batting details of player in "<<format[k]<<" format"<<endl ;
cout<<"Enter the number of matches played: "<<endl ;
cin>>matches[k] ;
cout<<"Innings played:"<<endl ;
cin>>batinns[k] ;
cout<<"Not outs:"<<endl ;
cin>>notouts[k] ;
cout<<"Runs :"<<endl ;
cin>>batruns[k] ;
cout<<"High score:"<<endl ;
cin>>highsc[k] ;
cout<<"Centuries :"<<endl ;
cin>>cen[k] ;
cout<<"Fifties :"<<endl ;
cin>>fif[k] ;
cout<<"Fours :"<<endl ;
cin>>four[k] ;
cout<<"Sixes :"<<endl ;
cin>>six[k] ;
cout<<"Average :"<<endl ;
cin>>batave[k] ;
cout<<"Strike rate:"<<endl ;
cin>>batstr[k] ;
}
}
void setbowldata()
{
//Function to write bowling stats
for(int k=0;k<6;k++)
{
cout<<"Enter the bowling details of player in "<<format[k]<<" format"<<endl ;
cout<<"Innings played:"<<endl ;
cin>>bowlinns[k] ;
cout<<"Runs:"<<endl ;
cin>>bowlruns[k] ;
cout<<"Wickets:"<<endl ;
cin>>wkts[k] ;
cout<<"Best bowling figures in an inning <runs wkts>:"<<endl ;
cin>>bbiruns[k] ;
cin>>bbiwkts[k] ;
cout<<"Best bowling figures in an match <runs wkts>:"<<endl ;
cin>>bbmruns[k] ;
cin>>bbmwkts[k] ;
cout<<"Five wicket haults:"<<endl ;
cin>>fivewkts[k] ;
cout<<"Ten wicket haults:"<<endl ;
cin>>tenwkts[k] ;
cout<<"Average:"<<endl ;
cin>>bowlave[k] ;
cout<<"Strike rate:"<<endl ;
cin>>bowlstr[k] ;
cout<<"Economy:"<<endl ;
cin>>eco[k] ;
}
}
void setfielddata()
{
//Function to set fielding stats
for(int k=0;k<6;k++)
{
cout<<endl<<"Enter the fielding stats of the player in "<<format[k]<<" format" ;
cout<<"Catches:"<<endl ;
cin>>catches[k] ;
cout<<"Stumpings:"<<endl ;
cin>>stumping[k] ;
}
}
//Function to print general information
void getgendata()
{
cout<<endl<<"GENERAL INFORMATION:"<<endl ;
cout<<"Full Name: "<<name<<endl ;
cout<<"Team: "<<team<<endl ;
cout<<"Date of birth (dd/mm/yyyy): "<<dobd<<"/"<<dobm<<"/"<<doby<<endl ;
cout<<"Role of the player: "<<role<<endl ;
cout<<"Batting style: "<<batstyle<<endl ;
cout<<"Bowling style: "<<bowlstyle<<endl ;
}
void getbatdata(int i,int j)
{
//Function to print batting information
cout<<endl<<"BATTING INFORMATION:"<<endl ;
for(int k=i;k<j;k++)
{
cout<<endl<<"Batting details of player in "<<format[k]<<" format"<<endl ;
cout<<"Matches: "<<matches[k]<<endl ;
cout<<"Innings played: "<<batinns[k]<<endl ;
cout<<"Not outs: "<<notouts[k]<<endl ;
cout<<"Runs: "<<batruns[k]<<endl ;
cout<<"High score: "<<highsc[k]<<endl ;
cout<<"Centuries: "<<cen[k]<<endl ;
cout<<"Fifties: "<<fif[k]<<endl ;
cout<<"Fours: "<<four[k]<<endl ;
cout<<"Sixes: "<<six[k]<<endl ;
cout<<"Average: "<<batave[k]<<endl ;
cout<<"Strike rate: "<<batstr[k]<<endl ;
}
}
void getbowldata(int i,int j)
{
//Function to write bowling stats
cout<<endl<<"BOWLING INFORMATION:"<<endl ;
for(int k=i;k<j;k++)
{
cout<<endl<<"Bowling details of player in "<<format[k]<<" format"<<endl ;
cout<<"Matches: "<<matches[k]<<endl ;
cout<<"Innings played: "<<bowlinns[k]<<endl ;
cout<<"Runs: "<<bowlruns[k]<<endl ;
cout<<"Wickets: "<<wkts[k]<<endl ;
cout<<"Best bowling figures in an innings <runs/wkts>: "<<bbiruns[k]<<"/"<<bbiwkts[k]<<endl ;
cout<<"Best bowling figures in an match <runs/wkts>: "<<bbmruns[k]<<"/"<<bbmwkts[k]<<endl ;
cout<<"Five wicket haults: "<<fivewkts[k]<<endl ;
cout<<"Ten wicket haults: "<<tenwkts[k]<<endl ;
cout<<"Average: "<<bowlave[k]<<endl ;
cout<<"Strike rate: "<<bowlstr[k]<<endl ;
cout<<"Economy: "<<eco[k]<<endl ;
}
}
void getfielddata(int i,int j)
{
//Function to write fielding stats
cout<<endl<<"FIELDING STATS:"<<endl ;
for(int k=i;k<j;k++)
{
cout<<endl<<"Fielding stats of the player in "<<format[k]<<" format"<<endl ;
cout<<"Catches: "<<catches[k]<<endl ;
cout<<"Stumpings: "<<stumping[k]<<endl ;
}
//Saving data
}
void storedata()
{
ofstream outputFile ;
outputFile.open("Data.dat",ios::app) ;
//Saving general info
outputFile<<name<<endl ;
outputFile<<team<<endl ;
outputFile<<dobd<<endl ;
outputFile<<dobm<<endl ;
outputFile<<doby<<endl ;
outputFile<<role<<endl ;
outputFile<<batstyle<<endl ;
outputFile<<bowlstyle<<endl ;
//Saving batting info all formats
for(int k=0;k<6;k++)
{
outputFile<<matches[k]<<endl ;
outputFile<<batinns[k]<<endl ;
outputFile<<notouts[k]<<endl ;
outputFile<<batruns[k]<<endl ;
outputFile<<highsc[k]<<endl ;
outputFile<<cen[k]<<endl ;
outputFile<<fif[k]<<endl ;
outputFile<<four[k]<<endl ;
outputFile<<six[k]<<endl ;
outputFile<<batave[k]<<endl ;
outputFile<<batstr[k]<<endl ;
}
for(int k=0;k<6;k++)
{
outputFile<<bowlinns[k]<<endl ;
outputFile<<bowlruns[k]<<endl ;
outputFile<<wkts[k]<<endl ;
outputFile<<bbiruns[k]<<endl ;
outputFile<<bbiwkts[k]<<endl ;
outputFile<<bbmruns[k]<<endl ;
outputFile<<bbmwkts[k]<<endl ;
outputFile<<fivewkts[k]<<endl ;
outputFile<<tenwkts[k]<<endl ;
outputFile<<bowlave[k]<<endl ;
outputFile<<bowlstr[k]<<endl ;
outputFile<<eco[k]<<endl ;
}
for(int k=0;k<6;k++)
{
outputFile<<catches[k]<<endl ;
outputFile<<stumping[k]<<endl ;
}
outputFile.close() ;
}
//Reading data
void fetchdata(char temp[])
{
ifstream inFile ;
inFile.open("Data.dat") ;
//Fetching general info
inFile>>name ;
while(strcmp(temp,name)!=0)
{
inFile>>name ;
}
inFile>>team ;
inFile>>dobd ;
inFile>>dobm ;
inFile>>doby ;
inFile>>role ;
inFile>>batstyle ;
inFile>>bowlstyle ;
//Fetching batting info-all formats
for(int k=0;k<6;k++)
{
inFile>>matches[k] ;
inFile>>batinns[k] ;
inFile>>notouts[k] ;
inFile>>batruns[k] ;
inFile>>highsc[k] ;
inFile>>cen[k] ;
inFile>>fif[k] ;
inFile>>four[k] ;
inFile>>six[k] ;
inFile>>batave[k] ;
inFile>>batstr[k] ;
}
//Fetching bowling info-all formats
for(int k=0;k<6;k++)
{
inFile>>bowlinns[k] ;
inFile>>bowlruns[k] ;
inFile>>wkts[k] ;
inFile>>bbiruns[k] ;
inFile>>bbiwkts[k] ;
inFile>>bbmruns[k] ;
inFile>>bbmwkts[k] ;
inFile>>fivewkts[k] ;
inFile>>tenwkts[k] ;
inFile>>bowlave[k] ;
inFile>>bowlstr[k] ;
inFile>>eco[k] ;
}
//Fetching fielding info-all formats
for(int k=0;k<6;k++)
{
inFile>>catches[k] ;
inFile>>stumping[k] ;
}
inFile.close() ;
}
} ;
int main()
{
int search ;
char temp[20] ;
profile s;
int choice ;
char res ;
cout<<"Select an option:"<<endl ;
cout<<"1: Create new profile"<<endl<<"2: Display existing profile"<<endl ;
cout<<"Enter your choice: " ;
cin>>choice ;
switch(choice)
{
case 1:
s.setgendata() ;
s.setbatdata() ;
s.setbowldata() ;
s.setfielddata() ;
s.storedata() ;
break ;
case 2:
cout<<"Enter name of the player: " ;
cin>>temp ;
s.fetchdata(temp) ;
cout<<"Select an option:\n1:Display full profile\n2:Display profile for an aspect\n3:Display profile in a format\n" ;
int ch ;
cout<<"Enter your choice: " ;
cin>>ch ;
switch(ch)
{
case 1:
s.getgendata() ;
s.getbatdata(0,6) ;
s.getbowldata(0,6) ;
s.getfielddata(0,6) ;
break ;
case 2:
cout<<"Select an aspect:\n1:General\n2:Batting\n3:Bowling\n4:Fielding\n" ;
int wish ;
cin>>wish ;
switch(wish)
{
case 1:
s.getgendata() ;
break ;
case 2:
s.getbatdata(0,6) ;
break ;
case 3:
s.getbowldata(0,6) ;
break ;
case 4:
s.getfielddata(0,6) ;
break ;
default:
cout<<"Invalid choice"<<endl ;
main() ;
break ;
}
break ;
case 3:
cout<<"Select a format\n1:Test\n2:ODI\n3:T20I\n4:Fist Class\n5:List A\n6:T20\n" ;
int wish2 ;
cin>>wish2 ;
if(wish2==1||wish2==2||wish2==3||wish2==4||wish2==5||wish2==6 )
{
s.getgendata() ;
s.getbatdata(wish2-1,wish2) ;
s.getbowldata(wish2-1,wish2) ;
s.getfielddata(wish2-1,wish2) ;
}
else
{
cout<<"Invalid choice"<<endl ;
main() ;
}
}
}
cout<<endl<<endl<<"'Q' to quit or any other key to continue : " ;
cin>>res ;
if(res=='q' || res=='Q')
{
return 0 ;
}
else
{
main() ;
}
}
答案 0 :(得分：1)
你真的需要了解你正在做什么来将阅读线与阅读线以外的东西混合在一起。发生了什么事情，对于bowlstyle，你正在以行结尾输入一些内容。因此，cin>>bowlstyle;抓住你所进入的任何东西，留下一条空行，供下一个getline吃。阅读bowlstyle后，您需要阅读结尾的行。 cin.ignore()会做到这一点，但实际上你应该首先更明智地设计你的输入代码。
答案 1 :(得分：0)
如果不仔细查看确切的代码，建议您使用std::string
std::getline(std::cin,input); //input is of type std::string
确保在cin.ignore(std::numeric_limits<streamsize>::max(), '\n');之后每次致电getline之前使用std::cin>>
参考： - ignore，std::getline