• On September 11, 2021
• By Karmehavannan
• 0 Comment
• Categories: function in C, pre-define maths function in C
• Tags: “math.h” header file

trunc function in C programming language

trunc function in C programming language

In this tutorial, we will discuss trunc  function in C programming language

Description

The trunc() math function in C programming language returns the truncated value from the floating point value and return integer value..

trunc() : This function truncates the decimal value from floating point value and returns an integer value.

 

Declaration

The declaration of the trunc() function in C programming language

double trunc(double value]);

float trunc(float value);

long double(long double value);

Parameters or arguments

parameters of trunc() function is

x- This is a floating point value

 

Returns

The trunc() function returns the truncated value from the given floating point value

 

Required Header

In the C Language, the required header file for the trunc function

#include<math.h>

Example

The following example shows the usage of trunc() function in C programming language

 

Program 1

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

int main()
{
    double x=17.07,y=46.107,z=234.867;
    printf("truncated value of %f is %f\n",x,trunc(x));
    printf("truncated value of %f is %f\n",y,trunc(y));
    printf("truncated value of %f is %f\n",y,trunc(z));
    getch();
    return 0;
}

 

When the above program is compiled, it will produce the following result

truncated value of 17.070000  is 17.000000
truncated value of 46.107000 is 46.000000
truncated value of 234.867000 is 234.000000

 

Program 2

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

int main()
{   //define the variable
    double truncValue;
    double inputValue;
    //get input from user
    printf("Please enter the value to calculate trunc value :");
    scanf("%lf",&inputValue);
    //calculate the trunc value
    truncValue=trunc(inputValue);
    //display the trunc value
     printf("\nTruncated value of %lf is %lf\n",inputValue,truncValue);
    getch();
    return 0;
}

When the above program is compiled, it will produce the following result

Please enter the value to calculate trunc value :56.7899
Truncated value of 56.890 is 56.000000

 

 

Similar functions

Other C programming language functions that are  similar to the cosine function

 

pow() function in C language

exp() function in C language

sqrt() function in C language

floor() function in C language

 

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