[help] why the output is false??

Question

#include<iostream>
using namespace std;
int main()
{
double a = 0.1;
double b = 0.2;
double c = 0.3;
if (a+b == c)
cout << "true" << endl;
else
cout << "false" << endl;
system("pause");
return 0;
}

Answer 1

https://www.sololearn.com/discuss/1955174/?ref=app

Answer 2

Add iomanip header file...And write this..
int main()
{
double a=0.1;
double b=0.2;
double c=0.3;
cout<<setprecision(20)<<a+b<<endl;
cout<<c;
}
Execute this code, then you will know the reason behind returning false...