Numbers
- What is the output of this program?
#include <iostream>
#include <limits>
using namespace std;
int main( )
{
cout << numeric_limits<float> :: digits10 << endl;
cout << numeric_limits<double> :: digits10 << endl;
float f = 99999999;
cout.precision ( 10 );
cout << f << endl;
}
-
View Hint View Answer Discuss in Forum
NA
Correct Option: A
In this program, We are finding the number of decimal points that the type can represent without loss of precision.
- Which header file is used for the numeric limits in C++?
-
View Hint View Answer Discuss in Forum
NA
Correct Option: A
<limits>; header file will be used for numeric limits in C++.
- What is the output of this program?
#include <iostream>
#include <limits>
using namespace std;
int main( )
{
cout << numeric_limits<float> :: min_exponent << endl;
}
-
View Hint View Answer Discuss in Forum
NA
Correct Option: D
In this program, We are finding the minimum radix of a type by using min_exponent function.
- What is the output of this program?
#include <iostream>
#include <complex>
using namespace std;
int main ()
{
complex<double> Comp (10.0, 4.0);
cout << imag(Comp) << endl;
return 0;
}
-
View Hint View Answer Discuss in Forum
NA
Correct Option: C
imag part will return the imaginary part of the complex number.
- What is the output of this program?
#include <iostream>
#include <limits>
using namespace std;
int main( )
{
cout << numeric_limits<float> :: is_exact;
cout << numeric_limits<double> :: is_exact;
cout << numeric_limits<long int> :: is_exact;
cout << numeric_limits<unsigned char> :: is_exact;
}
-
View Hint View Answer Discuss in Forum
NA
Correct Option: C
In this program, We are finding whether the types are free of rounding errors by using the function is_exact.
