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C trunc function

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The C trunc function is one of the math Function, used to return the truncated value of a given number or specified expression. In this article we will show you, How to write trunc function in C Programming language with example.

C programming trunc syntax

The basic syntax of the trunc in C Programming is as shown below.

double trunc(double value);

C trunc Function Example

The C math trunc Function allows you to find the truncated valueof a given number. In this program, We are going to find same, and display the output.

/* trunc in C Programming Example */

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

int main()
{
    printf("\n The Truncated Value of 0.75    = %.2f ", trunc(0.75));
    printf("\n The Truncated Value of 15.25   = %.2f ", trunc(15.25));
    printf("\n The Truncated Value of 152.50  = %.2f ", trunc(152.50));
    
    printf("\n The Truncated Value of -14.36  = %.2f ", trunc(-14.36));
    printf("\n The Truncated Value of -26.82  = %.2f ", trunc(-26.82));
    printf("\n The Truncated Value of -90.55  = %.2f \n", trunc(-90.55));
    
    return 0;
}

OUTPUT

C trunc function example 1

C trunc Example 2

In this example, we are allowing user to enter their own value. Next, we used trunc function to truncate the user specified value.

/* trunc in C Programming Example */

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

int main()
{
    float number, trunc_Value;
    
    printf(" Please Enter any Numeric Value to Round :  ");
    scanf("%f", &number);
    
    trunc_Value = trunc(number);
    
    printf("\n The Truncated Value of %.2f = %.4f \n", number, trunc_Value);
    
    return 0;
}

OUTPUT

C trunc function example 2