isinf() function in C++

Examples

Example 1:

#include <iostream>  
#include<math.h>  
using namespace std;  
int main()  
{  

   float x=1.0/0.0;  
   // as any number divided by 0 is 0, hence x will be infinity
   cout<<"Is x infinity : "<<isinf(x);  
   return 0;  
}  

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Output:

Is x infinity : 1

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In the above example, we divide 1 by 0. Hence, as any number divided by 0 is 0, hence x will be infinity.

Example 2:

#include <iostream>  
#include<math.h>  
using namespace std;  
int main()  
{  

   float x=4;  
   // as 4 is not infinity, hence the code outputs 0
   cout<<"Is x infinity : "<<isinf(x);  
   return 0;  
}  

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Output:

Is x infinity : 0

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In the above example, as 4 is not infinity, hence the code outputs 0.

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Must Read C++ vs Java

Frequently Asked Questions

What is C++ programming language?

C++ is an object-oriented programming language that offers programs a clear structure and promotes code reuse, which reduces development costs. C++ is a portable programming language that may be used to create cross-platform programs.

In which header file, is the isinf() function present?

isinf() function is present in the MATH header file in C++. 

Conclusion

In this article, we have extensively discussed the isinf() function in detail along with various examples in C++ programming language. We hope that this blog has helped you enhance your knowledge regarding the C++ programming language and if you would like to learn more about the C++ programming language, check out this article on basics to C++. You can refer to our guided paths on the Coding Ninjas Studio platform to learn more about DSA, DBMS, Competitive Programming, Python, Java, JavaScript, etc. To practice and improve yourself in the interview, you can check out Top 100 SQL problems, data structure course, Coding interview questions, and the Ultimate guide path for interviews. Do upvote our blog to help other ninjas grow. 

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