C Tutorial

🔢 Math Functions in C

In C programming, the standard library provides a set of mathematical functions that perform common mathematical operations. These functions help perform tasks like rounding numbers, calculating powers, trigonometric functions, and more. Let’s explore how to use them!

1. 🧑‍💻 pow() — Power Function

The pow() function is used to raise a number to the power of another number. Here's the syntax:

double pow(double base, double exponent);
  

For example, if we want to calculate 2^3 (2 raised to the power 3), we would use pow(2, 3).

✨ Example: Using pow()

#include 
#include 

int main() {
    double result = pow(2, 3);  // 2 raised to the power 3
    printf("2 raised to the power 3 is: %.2f\n", result);  // Output: 8.00
    return 0;
}
  

2. 🧮 sqrt() — Square Root Function

The sqrt() function computes the square root of a number.

double sqrt(double number);
  

✨ Example: Using sqrt()

#include 
#include 

int main() {
    double number = 16;
    double result = sqrt(number);  // Square root of 16
    printf("The square root of %.0f is: %.2f\n", number, result);  // Output: 4.00
    return 0;
}
  

3. 🕹️ fabs() — Absolute Value Function

The fabs() function returns the absolute value of a number. It is typically used for floating-point numbers.

double fabs(double number);
  

✨ Example: Using fabs()

#include 
#include 

int main() {
    double number = -25.5;
    double result = fabs(number);  // Absolute value of -25.5
    printf("The absolute value of %.1f is: %.1f\n", number, result);  // Output: 25.5
    return 0;
}
  

4. 🔄 fmod() — Remainder of Division Function

The fmod() function returns the remainder of a division of two floating-point numbers.

double fmod(double x, double y);
  

✨ Example: Using fmod()

#include 
#include 

int main() {
    double result = fmod(22.5, 4.0);  // 22.5 divided by 4.0
    printf("The remainder of 22.5 / 4.0 is: %.2f\n", result);  // Output: 2.50
    return 0;
}
  

5. 🔢 sin(), cos(), and tan() — Trigonometric Functions

The trigonometric functions in C work with angles in radians. They calculate sine, cosine, and tangent respectively.