What is the code to open the root number in C language?

In C language, the code to open the root sign is "sqrt (floating point value x)"; for example, "sqrt(4.0)" performs the square root operation on 4, and the result is 2. sqrt() is a built-in root operation function in C language. Its operation result is the arithmetic square root of the function variable; this function can neither operate negative values ​​nor output imaginary results.

The operating environment of this tutorial: Windows 7 system, C 17 version, Dell G3 computer.

Add #include in the header file

Then use sqrt, you can use double definition

For example:

#include <math.h>
#include <stdio.h>
#include <stdlib.h>
double sqrt(double n);
int main(void)
{
double x = 3.1415926540, result;
result = sqrt(x);
printf("The square root of %lf is %lf", x, result);
return 0;
}

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