We know the equation,
(C/5) ={(F-32)/9}
Here,
C define Centigrade
F define Fahrenheit
So, if we need centigrade value from Fahrenheit then,
(C/5) =(F-32)/9
or, C=5(F-32)/9
or, C=(5F-160)/9
So, the algorithm is,
step1: Start the program
step2: Input a Fahrenheit value ‘f’
step3: C=(5F-160)/9
step4: Print ‘C’ which is Centigrade value
step5: End the program
Code:
#include <stdio.h>
int main()
{
float f;
float c;
printf("Enter Your temperature in Fahrenheit ");
scanf("%f",&f);
c=(5*f-160)/9;
printf("Your temperature in centigrade is %f",c);
return 0;
}
Here “float f;” means you can use Fahrenheit valued which is a floating number. “float c;” means you can use centigrade value which is a floating number. “printf("Enter Your temperature in Fahrenheit ");” means it will show users a command that what they have to do. “scanf("%f",&f);” means it will pick a floating number which is the value of temperature in Fahrenheit scale. “%f” means the compiler will get floating number. “c=(5*f-160)/9;” is the main equation! “printf("Your temperature in centigrade is %f",c);” means we will get the value of “C”.
Test (Do it yourself):
Write a c program which can do centigrade to Fahrenheit conversion.
Clue:
complete the equation first. F= (9C+160)/5
