• On April 22, 2023
• By Karmehavannan
• 0 Comment
• Categories: function in C, temperature conversion
• Tags: C examples, C language, Function in C, Temperature, User defined function

function to Convert Fahrenheit into Celsius using C Program

function to Convert Fahrenheit into Celsius using C Program

In this tutorial, we will discuss the concept of the function to Convert Fahrenheit into Celsius using C Program

In this post, we will learn how to write a program to convert Fahrenheit into Celsius using the scientific equation in C programming language with an Example program.

Temperature and conversion

Generally, We have known three types of temperature units Fahrenheit, Celsius, and Kelvin. In this article, we are discussing how to convert temperature units Fahrenheit into Celsius. Fahrenheit and Celsius are the measuring units in degrees as ⁰F and ⁰C  respectively.

Scientific equation Celsius = (Fahrenheit-32)*9/5

Code to Fahrenheit into Celsius

 Fahrenheit into Celsius

In this program, the user declares a double variable as a parameter for Fahrenheit in the user-defined function. When the user calls the function, the Celsius value passes to the method as an argument.
Finally, the Celsius value is calculated using a scientific equation and displayed on the screen.

Program 1

// program to convert fahrenheit into celsius using function
//in C language
#include <stdio.h>
 float convertFahToCels(float fh){
 return ((fh-32)*5/9);
 }
int main() {
    // declaring variables
   
   
    //Convert fahrenheit into celsius
    float celsius=convertFahToCels(32.00);
     float celsius1=convertFahToCels(00.00);
    float celsius2=convertFahToCels(212.00);
    float celsius3=convertFahToCels(100.00);
    float celsius4=convertFahToCels(200.00);
    printf("The temperature in Celsius is=%.2f \n",celsius);
    printf("The temperature in Celsius is=%.2f \n",celsius1);
 printf("The temperature in Celsius is=%.2f \n",celsius2);
  printf("The temperature in Celsius is=%.2f \n",celsius3);
   printf("The temperature in Celsius is=%.2f \n",celsius4);;
    return 0;
}

When the above code is executed, it produces the following result

The temperature in Celsius is=0.00
The temperature in Celsius is=-17.78
The temperature in Celsius is=100.00
The temperature in Celsius is=37.78
The temperature in Celsius is=93.33

Fahrenheit into Celsius – Entered by the user

In this program, the user declares a double variable as a parameter for Fahrenheit in the user-defined function. When the user runs the program (calling the function), the program is asked for the value for Fahrenheit and stores the given value in the variable Fahrenheit as an argument for the function.
Finally, the Celsius value is calculated using scientific equations and displayed on the screen.

Program 2

// C program to convert fahrenheit into celsius using function
#include <stdio.h>
 float convertFahToCels(float fh){
 return ((fh-32)*5/9);
 }
int main() {
    // declaring variables
    float celsius,fahrenheit;
   //ask input for variables
     printf("Enter temperature in Fahrenheit :");
    scanf("%f",&fahrenheit);
    //Convert fahrenheit into celsius
    celsius=convertFahToCels(fahrenheit);
    printf("The temperature in Celsius is=%.2f ",celsius);

    return 0;
}

When the above code is executed, it produces the following result

Enter temperature in Fahrenheit:200.00
The temperature in Celsius is=93.33

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