Skip to main content

Sqrt() function in C

 

What is the sqrt() function in C?

In C programming, the sqrt() function is used to find out the square root of a number. sqrt() function is one of the pre-defined functions in C programming, stored in math.h header file. We can use the sqrt() function, after including the math. h header file at the start of our program.
There are many other library functions and header files available in the C programming language, you can study them on our library functions on the C page

 

How to use sqrt()

sqrt() function in C programming is a double-type function, that is it returns the value in decimal format. This function works with int, short, byte long, double, and float datatypes, but sometimes, on some compilers, it may give an error while using any datatype other than double.

Syntax for sqrt() function

  • sqrt( integer );

Let’s take a sample code, and understand how to use the sqrt() function

C code for using sqrt() function

#include 
#include 
int main()
{
    double ans=0.0;
    int a = 25;
    ans= sqrt(a);
    
    printf("The square root of %d is %f",a,ans);
 
    return 0;
}

Output

The square root of 25 is 5.000000

 

Labels:

Comments

Post a Comment

Popular posts from this blog

Variables in C

  Variables in C   Variables in programming In computer terms, a variable is the name of the memory location of the data which can be accessed with the help of that name and can be rewritten or used for calculations later on. Variable is a storage area. which is used to store the data. variable data is contained, which can be changed at any time during program execution. After declaring the variable it is given a value, this value is to be assigned in many forms. Like x = 5; or a=10;    Before using the variable it is necessary to declare in C. Values of variables are changeable. You can delete a value and enter another value.  You can also do this on compile time and dynamically(during program execution). For example:  Let’s say we have to store a student’s name and his roll number in a variable. For this, we take two variables, store the name of the student in a variable while the other variable stores the roll number ...
Post a Comment
Read more

Identifiers and keywords in C

In this section, we will learn about the keywords and reversed words in C programming that are part of the syntax. also, we will learn about the identifiers and how to name them. Keywords int, double, struct, switch, etc. Identifiers test, count, high, high-speed, etc. now we will study identifiers and keywords in detail. we will see, how many keywords are there in C programming and all the rule for the select identifiers. Keywords in C Keywords are predefined, reversed words used in programming that have special meanings to the compiler. Each keyword is meant to perform a specific function in a C program. Since keywords are referred names for the compiler, they can not be used as variable names. There are a fixed number of  Keyword in the C programming language  and every Keyword serve as a building block for program statements.  There is a total of 32 keywords in C keywords written in lowercase letters. The following table represents the keywords i...
Post a Comment
Read more