C Programming - Floating Point Issues - Discussion

Discussion :: Floating Point Issues - General Questions (Q.No.1)

1.

What are the different types of real data type in C ?

 [A]. float, double [B]. short int, double, long int [C]. float, double, long double [D]. double, long int, float

Explanation:

The floating point data types are called real data types. Hence float, double, and long double are real data types.

 Safi said: (Dec 30, 2011) A real data type is float. Therefor float, double, long double re real data types.

 Raveena Yadav said: (Feb 3, 2012) Is long int not real data type ?

 Sri said: (Apr 24, 2012) long int is not real datatype. int gives a round vaule

 Shiv Gauri said: (Jul 30, 2012) The floating point data types are called real data types. Hence float, double, and long double are real data types.

 Reddy said: (Aug 29, 2012) What is the need of giving (unsigned char) p[i] ?

 Ranga said: (Sep 23, 2012) Why it is called real data type?

 Smiline Jeba said: (Jan 30, 2013) Because it gives the real value. Ex 2/5=2.50 it is the real value. It calculate the value accurately. If am wrong. Please correct me.

 Ajay said: (May 8, 2013) float, double and long double called real data type because it's compute real value of any number. For Example if we want to get accurate output suppose A = 2.3 and B = 3.2 and C, Thus, C = A +B; We get 5.500000; Hence its called a real data type.

 Ajay said: (May 8, 2013) Could you explain me what is deference between double and long double real data type?

 Thomsika said: (May 15, 2013) Can you explain the difference between float, double and long double?

 Sivakumar said: (Jun 28, 2013) int main(){ float x; x=(float)3.3==3.3; printf("%f",x); return 0; } Ans 0.00 int main(){ float x; x=(float)3.5==3.5; printf("%f",x); return 0; } Ans 1.00 How it is possible please anyone could you explain please?

 Akshay said: (Aug 31, 2013) #include int main(){ float x; x=(float)4.2==(float)4.2; printf("%f",x); x=(float)3.5==3.5; printf("\n%f",x); return 0; } Answer: 1.00 1.00 This one works. I just converted both no into float. I just cannot figure out exactly why this is happening. Hope someone can figure out.

 V.Koks said: (Aug 5, 2014) How the output came like this?

 Sachin said: (May 8, 2015) Anyone could explain me how this code has worked?

 Anusha said: (Jun 18, 2015) I do not exactly. But I think this concept follows partial initialization, full initialization, null initialization. If I'm wrong any explain me the concept.

 Mustaqueem Khan said: (Jun 26, 2015) Very good example given by all of you. Thanks for your time.

 Akshay said: (Jul 13, 2017) @Akshay. Just use like Logical Operators (float)4.2==(float)4.2 is equal, so that's true and prints 1, as float, 1.0000000.