# What Data Type Is Pow () in C?

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Heather Bennett

In the world of programming, understanding data types is fundamental. It allows us to manipulate and process different kinds of data efficiently.

In the C programming language, the pow() function plays a crucial role in mathematical calculations involving exponentiation. But have you ever wondered what data type pow() returns? Let’s dive into this topic and explore the data type of pow() in C.

The pow() function:
The pow() function in C is a powerful mathematical function that calculates the power of a given base raised to an exponent. It is defined in the header file and has the following syntax:

`double pow(double base, double exponent);`

The `pow()` function takes two arguments: the base and the exponent. It returns the value of base raised to the power of exponent as a double-precision floating-point number.

Data Type:
As mentioned earlier, the data type returned by `pow()` is a double. The double data type in C represents floating-point numbers with double precision. It can store decimal values with a larger range and higher precision compared to float.

Example Usage:
Let’s explore an example to understand how `pow()` works and what its return value represents:

``````#include <stdio.h>
#include <math.h>

int main() {
double base = 5;
double exponent = 2;
double result = pow(base, exponent);

printf("Result: %lf\n", result);

return 0;
}``````

In this example, we have declared two variables: base and exponent, with values 5 and 2 respectively. We then use `pow()` to calculate base raised to the power of exponent and store it in the result variable. Finally, we print the result using `printf()`.

When you compile and run this program, the output will be:

`Result: 25.000000`

As you can see, the result is a double-precision floating-point number. In this case, `pow(5, 2)` returns 25.

Note:
It’s important to note that the pow() function returns a double data type even if the base and exponent values are integers. This is because C implicitly converts integer values to doubles before performing any mathematical calculations involving pow().

Now that you understand that the pow() function in C returns a double data type, you can confidently use it in your mathematical calculations requiring exponentiation.

• Summary:
• The pow() function in C calculates the power of a given base raised to an exponent.
• The data type returned by pow() is a double-precision floating-point number.
• The result of pow() can handle both integer and decimal values.

### Conclusion

In this tutorial, we explored the data type of the pow() function in C. We learned that it returns a double-precision floating-point number and how to use it effectively in mathematical calculations involving exponentiation. Understanding the data types of functions is essential for writing robust and efficient code. Now that you have gained this knowledge, feel free to leverage the power of pow() in your future programming endeavors!