C program to write x raised to the yth power

In the C program, you can write the y-th power of x through the pow() function. The function of pow() is to calculate the y-th power value with x as the base. Its syntax is "double pow(double x, double y);".

The operating environment of this tutorial: Windows 7 system, version C11, Dell G3 computer.

How to write x raised to the yth power in C program?

C language pow() function: find x raised to the yth power (power)

Header file: #include

pow() function is used to find the y power (power) of x. Its prototype is:

double pow(double x, double y);

pow() to calculate the value raised to the yth power with x as the base, and then return the result. Assume the return value is ret, then ret = xy.

Potential error situations:

If the base x is a negative number and the exponent y is not an integer, a domain error will occur.

If the base x and the exponent y are both 0, a domain error may or may not occur; this is related to the implementation of the library.

If the base x is 0 and the exponent y is a negative number, it may cause domain error or pole error, or it may not; this depends on the implementation of the library.

If the return value ret is too large or too small, a range error will occur.

Error code:

If a domain error occurs, then the global variable errno will be set to EDOM;

If a pole error or range error occurs, then the global variable errno will be set to ERANGE.

Note, please add -lm when compiling with GCC.

[Example] Please see the code below.

#include <stdio.h>
#include <math.h>
int main ()
{
    printf ("7 ^ 3 = %f\n", pow (7.0, 3.0) );
    printf ("4.73 ^ 12 = %f\n", pow (4.73, 12.0) );
    printf ("32.01 ^ 1.54 = %f\n", pow (32.01, 1.54) );
    return 0;
}

Output result:

7 ^ 3 = 343.000000
4.73 ^ 12 = 125410439.217423
32.01 ^ 1.54 = 208.036691

Recommendation: "c language video tutorial"

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