/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

0 vote147 views1 answer
Cpp tutorial
C++
0 vote145 views1 answer
Greater <pair<int,int>>
C++
14 votes148 views5 answers
Create a vector of size n in c++
C++
0 vote146 views1 answer
Set width qpushbutton
C++
0 vote159 views1 answer
Advanced c++ topics
C++
12 votes148 views2 answers
Copy constructor c++ syntax
C++
0 vote129 views1 answer
How to get an element in a list c++
C++
0 vote148 views1 answer
C++ Attribute Parser
C++
2 votes145 views1 answer
How to complie with c++ 17
C++
0 vote140 views1 answer
How to generate number in c++
C++