Thread: Is there any way to clear the keyboard buffer?

I have a program using a vector of chars. For some reason this does not let me enter the first character.


code:--------------------------------------------------------------------------------
#include <iostream>
#include <vector>
#include <string.h>

using namespace std;

typedef vector<char*> ChaVec;
ChaVec CharacterVector;

int main() {
int NumOfChars;

cout << "How many characters do you want created? " << endl;

cin >> NumOfChars;

for(int i = 0; i < NumOfChars; i++) {
CharacterVector.push_back(new char[50]);
cout << "Please enter what you want string number " << i << " to be" << endl;
cin.getline(CharacterVector[i], 50);
cout << "CharacterVector["<<i<<"] is " << CharacterVector[i] << endl;
}

return 0;
}
--------------------------------------------------------------------------------

On the other hand this does work

Code:

#include <iostream>
#include <vector>
#include <string.h>

using namespace std;

typedef vector<char*> ChaVec;
ChaVec CharacterVector;

int main() {
	int NumOfChars;

	cout << "Five characters will be created for you, stupid ****ing ****bag " << endl;
	
	
	CharacterVector.push_back(new char[50]);
	for(int i = 0; i < 5; i++) {
		CharacterVector.push_back(new char[50]);
		cout << "Please enter what you want string number " << i << " to be" << endl;
		cin.getline(CharacterVector[i], 50);
		cout << "CharacterVector["<<i<<"] is " << CharacterVector[i] << endl;
	}

	return 0;
}

Is there some way to clear the buffer after using cin >> ?
That seems to be what is causing my problem.

I think its cin.ignore
But you'll need to look up the exact usage

> For some reason this does not let me enter the first character
The first getline just uses the \n left behind by

cin >> NumOfChars;

thanks cin.ignore() works for me!