Check if cin didn't get int

while (std::cout << "Enter a number" && !(std::cin >> num)) {
    std::cin.clear(); //clear bad input flag
    std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n'); //discard input
    std::cout << "Invalid input; please re-enter.\n";
}

Similar codes

0 vote116 views1 answer
++ how to write quotation mark in a string
C++
0 vote159 views1 answer
C++ convert const char* to int
C++
0 vote129 views1 answer
All permutations with repetition C++
C++
0 vote130 views1 answer
Sizeof’ on array function parameter ‘arr’ will return size of ‘int*’ [-Wsizeof-array-argument]
C++
0 vote118 views1 answer
Arduino jumper programmieren
C++
0 vote129 views1 answer
Print stack without pop c++
C++
18 votes124 views5 answers
C++ clear console
C++
0 vote117 views2 answers
Constructor overloading in c++
C++
-1 vote128 views1 answer
You don't have an extension for debugging yaml flutter
C++
-1 vote136 views4 answers
Inline function in c++
C++