In c we can compile variety of mathematical functions using math.h header file.
Here are some commenly used math functions
Function
Description
Example
sin(x)
Sine function
sin(0.5) returns the sine of 0.5 radians
cos(x)
Cosine function
cos(0.5) returns the cosine of 0.5 radians
tan(x)
Tangent function
tan(0.5) returns the tangent of 0.5 radians
asin(x)
Arcsine function (inverse of sine)
asin(0.5) returns the arcsine of 0.5, in radians
acos(x)
Arccosine function (inverse of cosine)
acos(0.5) returns the arccosine of 0.5, in radians
atan(x)
Arctangent function (inverse of tangent)
atan(0.5) returns the arctangent of 0.5, in radians
EDUCATION
#include <stdio.h>
#include <math.h>
int main() {
double x = 2.5;
double y = 3.0;
// Trigonometric functions
printf("sin(%f) = %f\n", x, sin(x));
printf("cos(%f) = %f\n", x, cos(x));
printf("tan(%f) = %f\n", x, tan(x));
printf("asin(%f) = %f\n", x, asin(x));
printf("acos(%f) = %f\n", x, acos(x));
printf("atan(%f) = %f\n", x, atan(x));
return 0;
}Function
Description
Example
exp(x)
Exponential function (e^x)
exp(2.0) returns the value of e^2
log(x)
Natural logarithm (base e)
log(10.0) returns the natural logarithm of 10
log10(x)
Base-10 logarithm
log10(100.0) returns the base-10 logarithm of 100
#include <stdio.h>
#include <math.h>
int main() {
double x = 2.5;
double y = 3.0;
// Exponential and logarithmic functions
printf("exp(%f) = %f\n", x, exp(x));
printf("log(%f) = %f\n", x, log(x));
printf("log10(%f) = %f\n", x, log10(x));
return 0;
}Function
Description
Example
pow(x, y)
Power function (x^y)
pow(2.0, 3.0) returns 2^3
sqrt(x)
Square root
sqrt(25.0) returns the square root of 25
ceil(x)
Ceil (round up to the nearest integer)
ceil(2.3) returns 3
floor(x)
Floor (round down to the nearest integer)
floor(2.9) returns 2
round(x)
Round to the nearest integer
round(2.3) returns 2, round(2.7) returns 3
#include <stdio.h>
#include <math.h>
int main() {
double x = 2.5;
double y = 3.0;
// Power function
printf("pow(%f, %f) = %f\n", x, y, pow(x, y));
// Square root
printf("sqrt(%f) = %f\n", x, sqrt(x));
// Rounding functions
printf("ceil(%f) = %f\n", x, ceil(x));
printf("floor(%f) = %f\n", x, floor(x));
printf("round(%f) = %f\n", x, round(x));
}Function
Description
Example
fabs(x)
Absolute value
fabs(-5.0) returns 5
rand()
Pseudo-random integer between 0 and RAND_MAX
rand() generates a random intege
srand(seed)
Seed for rand() function
srand(123) sets the seed for reproducibility
#include <stdio.h>
#include <math.h>
int main() {
double x = 2.5;
double y = 3.0;
// Absolute value
printf("fabs(%f) = %f\n", -x, fabs(-x));
// Random number generation
srand(123); // seed for reproducibility
printf("rand() = %d\n", rand());
}The Concepts and codes you leart practice in Compilers till you are confident of doing on your own. A Various methods of examples, concepts, codes availble in our websites. Don't know where to start Down some code examples are given for this page topic use the code and compiler.
