/C++/Know what the input data is whether integer or not

Know what the input data is whether integer or not

#include <iostream>

using std::cout;
using std::cin;
using std::endl
using std::string;

bool isNumber(const string& str)
{
    for (char const &c : str) {
        if (std::isdigit(c) == 0) return false;
    }
    return true;
}

int main(){
    string str1 = "231524randstr23";
    string str2 = "23152423";
    string str3 = "a3152423";

    isNumber(str1) ? cout << "Number\n" : cout << "Not number\n";
    isNumber(str2) ? cout << "Number\n" : cout << "Not number\n";
    isNumber(str3) ? cout << "Number\n" : cout << "Not number\n";

    return EXIT_SUCCESS;
}

Source: delftstack.com

Similar codes

3 votes294 views1 answer
Reference function in c++
C++
0 vote270 views1 answer
C++ calorie calculator using a for loop
C++
0 vote275 views1 answer
Import matrix from excel to matlab
C++
32 votes262 views3 answers
Remove specific element from vector c++
C++
0 vote261 views1 answer
Run program until ctrl-d c++
C++
15 votes277 views3 answers
Char to string c++
C++
9 votes282 views9 answers
Selection sort
C++
0 vote297 views1 answer
Ue4 c++ string from fvector
C++
1 vote270 views1 answer
Height of bst cpp
C++
0 vote276 views1 answer
Result += a +b in c++ meaning
C++