/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

6 votes165 views6 answers
C++ sort vector
C++
-2 votes169 views1 answer
English to french typing online
C++
3 votes169 views1 answer
Sfml draw line
C++
0 vote158 views1 answer
Std::set remove item
C++
5 votes160 views6 answers
While loop c++
C++
0 vote165 views1 answer
Extra parameter in comparator function for sort
C++
0 vote167 views1 answer
Std::map get all keys
C++
0 vote171 views1 answer
Decising how many numbers after comma c++
C++
1 vote162 views3 answers
Reverse string c++
C++
1 vote166 views1 answer
Ue4 find component c++
C++