covert F to C code example

Example 1: c to f

let f = c * (9/5) + 32;
let c = (f - 32) * (5/9);

Example 2: c program convert fahrenheit to celsius

#include<stdio.h>
 
void main()
{
    float celsius,fahrenheit;
 
    printf("\nEnter temperature in Fahrenheit:");
    scanf("%f",&fahrenheit);
 
   
    celsius=(fahrenheit - 32)*5/9;
    
    printf("\nCelsius = %.3f",celsius); 
}