CODEWITHSUNDEEP
c++
Mutai Mwiti
Mutai Mwiti

Reputation: 487

How to use getline in a loop c++

I am using getline() in a loop. During the first loop everything runs okay except for the last getline(). During the second loop the first getline() seems to have been skipped. Here is the loop: 

while(true)
    {
        cout <<endl<< "Enter Student's Name: ";
        getline(cin,tmp_name);
        cout << "Enter Student's RegNo: ";
        getline(cin,tmp_regno);
        cout << "Enter Student's marks: ";
        cin>>tmp_marks;
        mystudents.push_back(student(tmp_name,tmp_regno,tmp_marks));
        mystudents[no_ofStudents].getGrade();
        no_ofStudents++;
        cout<<endl<<endl<<"Do you wish to continue? To continue enter yes or any other key to stop: ";
        getline(cin,continue_stop);
        if (continue_stop!="yes"&&continue_stop!="YES")
            break;
    }

Upvotes: 0

Views: 3269

Answers (4)

user13182161
user13182161

Reputation: 

cin.ignore(numeric_limits<streamsize>::max(),'\n');

Try using this after cin

Upvotes: 0

Hitesh Vaghani
Hitesh Vaghani

Reputation: 1362

And another thing 

if (continue_stop!="yes"&&continue_stop!="YES")
   break;

This will break while loop at wrong time.

Upvotes: 1

4pie0
4pie0

Reputation: 29724

cin >> tmp_marks;

leaves '\n' in input stream and you are reading it in the next read

std::getline( std::cin,continue_stop);

You can ignore this character with:

    std::cin>>tmp_name;
    std::cin.ignore();
    std::cout<<std::endl<<std::endl<<"Do you wish to continue?";
    std::getline( std::cin,continue_stop);
    if (continue_stop!="yes"&&continue_stop!="YES")
        break;

Upvotes: 1

R Sahu
R Sahu

Reputation: 206577

cin >> tmp_marks;

leaves the newline character ('\n') in the input stream. You have to figure out a way to read everything after that until the next newline.

Upvotes: 1

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