Integer input validation in C++ || How to Validated Integer Input in C++ || Input Validation in C++

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Integer input validation in C++ , How to Validated Integer Input in C++ ,Input Validation in C++:
In this video we will show how to use different builtin function to validate integer input in C++

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code for the video
/*
// Integer input validation in C++
int main()
{
int x;
cout << "Enter an integer: ";
cin >> x;
while (1)
{
if (cin.fail())
{
cout << "Invalid input. Please enter an integer." << endl;
cin.clear();
cin.ignore(132, '\n');
cin >> x;
}
if (!cin.fail())
break;
}
cout << "The entered No is : " << x << endl;

_getch();
}*/

/*cin.fail() - This function returns true when an input failure
occurs.In this case it would be an input that is not an integer.
If the cin fails then the input buffer is kept in an error state.*/

/*cin.clear() - This is used to clear the error state of the
buffer so that further processing of input can take place.This ensures
that the input does not lead to an infinite loop of error message display. */

/*cin.ignore() - This function is used to ignore the rest of the line after
the first instance of error that has occurred and it skips to or moves to the next line.*/

Learning_with_Khattak

// Integer input validation in C++
int main()
{
int x;
cout << "Enter an integer: ";
cin >> x;
while (1)
{
if (cin.fail())
{
cout << "Invalid input. Please enter an integer." << endl;
cin.clear();
cin.ignore(132, '\n');
cin >> x;
}
if (!cin.fail())
break;
}
cout << "The entered No is : " << x << endl;

_getch();
}*/

Learning_with_Khattak

Integer input validation in C++ || How to Validated Integer Input in C++ || Input Validation in C++

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