Mathematical Functions in c programming langauage

C Programming Language Function in C Language (Article) Function in C Language (Program)

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This program demonstrates the usage of various mathematical functions provided in the "math.h" header file of C. It initializes a variable "a" with the value 0.25 and then uses various functions such as abs(), acos(), asin(), atan(), atan2(), cos(), sin(), tan(), and sqrt() to perform mathematical operations on "a" and store the result in variable "b". Finally, it prints the value of "b" using the printf() function.

Program:

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

int main() {
    float a;
    float b;
    float pi = 3.14;
    a = 0.25;

    // Printing the value of a
    printf("value a = %.2f \n", a);

    // Calculating and printing the absolute value of a
    b = abs(-a);  // Note: abs() is for integers, fabs() should be used for floats
    printf("abs(a)=%.2f \n", b);

    // Calculating and printing the arc cosine of a
    b = acos(a);
    printf("acos(a)=%.2f \n", b);

    // Calculating and printing the arc sine of a
    b = asin(a);
    printf("asin(a)=%.2f \n", b);

    // Calculating and printing the arc tangent of a
    b = atan(a);
    printf("atan(a)=%.2f \n", b);

    // Calculating and printing the arc tangent of a divided by 5
    b = atan2(a, 5);
    printf("atan(a,5)=%.2f \n", b);

    // Calculating and printing the cosine of a
    b = cos(a);
    printf("cos(a)=%.2f \n", b);

    // Calculating and printing the sine of a
    b = sin(a);
    printf("sin(a)=%.2f \n", b);

    // Calculating and printing the tangent of a
    b = tan(a);
    printf("tan(a)=%.2f \n", b);

    // Calculating and printing the square root of a
    b = sqrt(a);
    printf("sqrt(a)=%.2f \n", b);

    return 0;
}

Output:

value a = 0.25
abs(a)=0.00
acos(a)=1.32
asin(a)=0.25
abs(a)=0.24
atan(a,5)=0.05
cos(a)=0.97
sin(a)=0.25
tan(a)=0.26
sqrt(a)=0.50
Press any key to continue . . .

Explanation:

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