C - Exploring common math functions

Introduction

The following table listed some common math functions.

Function	#include	What It Does
sqrt()	math.h	Calculates the square root of a floating-point value
pow()	math.h	Returns the result of a floating-point value raised to a certain power
abs()	stdlib.h	Returns the absolute value (positive value) of an integer
floor()	math.h	Rounds up a floating-point value to the next whole number (nonfractional) value
ceil()	math.h	Rounds down a floating-point value to the next whole number

Demo

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

int main() /*from w ww. j  a v  a2 s.co  m*/
{ 
   float result,value; 

   printf("Input a float value: "); 
   scanf("%f",&value); 
   result = sqrt(value); 
   printf("The square root of %.2f is %.2f\n", value,result); 
   result = pow(value,3); 
   printf("%.2f to the 3rd power is %.2f\n", value,result); 
   result = floor(value); 
   printf("The floor of %.2f is %.2f\n", value,result); 
   result = ceil(value); 
   printf("And the ceiling of %.2f is %.2f\n", value,result); 
   return(0); 
}

C - Exploring common math functions

Introduction

Demo

Result

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