Fcvt In C

Syntax:

It has the following syntax:

char * fcvt (double val, int n, int * dece, int * signs);

• ✅ double val: The floating-point value will be converted to a string.
• ✅ int n: It is the number of digits that the function will return. If it is larger than the total amount of digits in value, the remainder of the string is padded with zeros; otherwise, the low-order digit is reduced.
• ✅ int * dece: It is an integer pointer that stores the decimal point location relative to the beginning of the text. If it is 0 or less than zero, the decimal point is located just to the left of the digits.
• ✅ int * signs: It is an integer pointer that gets the sign indication, where 0 indicates a positive sign, and non-zero indicates a negative sign.

The function outputs a null-terminated string of characters with the same length as the specified number. This string will hold the individual digits of the double precision number given as input.

The upcoming C code examples demonstrate the utilization of the fcvt function:

Example 1:

//Program to implement the fctv() function in C

#include <stdio.h> 

#include <stdlib.h> 

// Function for finding the result

void useOfFcvt() 

{ 

	double x1 = 128.7654; 

	char* buffer; 

	int dece, signs; 



	// the function fctv() is called 

	buffer = fcvt(x1, 6, &dece, &signs); 



	// display of the result string after conversion

	printf("The value of the string is: %c%c.%sX10^%d\n", 

		signs == 0 ? '+' : '-', 

		'0', buffer, dece); 

} 



// main

int main() 

{ 

	// function calling 

	useOfFcvt(); 

	return 0; 

}

Output:

The value of the string is: +0.128765400X10^3

Example 2:

//Program to implement the fctv() function in C

#include <stdio.h> 

#include <stdlib.h> 

// main 

int main(void) 

{ 

	char* str; 

	double val; 

	int Dece, signs; 

	int ndigs = 10; 

	val = -8.676; 

	str= fcvt(val, ndigs, 

				&Dece, &signs); 

	printf("The converted string"

		" value is: %s Dec "

		"is: %d sign is: %d\n", 

		str, Dece, signs); 

	return 0; 

}

Output:

The converted string value is: 86760000000 Dec is: 1 sign is: 1

Advantages of using fctv

There are several advantages of the fcvt function in C. Some main advantages of the fcvt function are as follows:

• ✅ This function allows developers to convert floating-point integers into strings with many formatting choices, such as decimal precision, scientific notation, and the representation of unexpected numbers such as infinity or NaN (Not a Number) . It supports many formatting options, allowing developers to select between various styles and accuracy levels.
• ✅ For example, you may use the fcvt function to convert a floating-point integer to a string in either fixed-point or scientific notation by specifying the number of decimal places, the resultant string's minimum width, and whether or not you want to pad with zeros.
• ✅ The fcvt function enables the customization of output representations of floating-point numbers by providing this degree of control, assuring precision and desired format when presenting or storing these numbers in different programs or systems.