By | 02.11.2016

# Fahrenheit to Celsius and Celsius to Fahrenheit

Write a C program to convert temperature from Fahrenheit to Celsius and Celsius to Fahrenheit . Here’s simple C program to convert temperature from Fahrenheit to Celsius and vice versa in C Programming Language.

Below is the source code for C program to convert temperature from Fahrenheit to Celsius and vice versa which is successfully compiled and run on Windows System to produce desired output as shown below :

### SOURCE CODE : :

```/*  C program to convert temperature from Fahrenheit to Celsius and vice versa  */

#include <stdio.h>

int main()
{

float fh,cl;
int choice;

printf("\n1: Convert temperature from Fahrenheit to Celsius.");
printf("\n2: Convert temperature from Celsius to Fahrenheit.\n");
printf("\nEnter your choice (1, 2): ");
scanf("%d",&choice);

if(choice ==1){
printf("\nEnter temperature in Fahrenheit: ");
scanf("%f",&fh);
cl= (fh - 32) / 1.8;
printf("\nTemperature in Celsius: %.2f",cl);
}
else if(choice==2){
printf("\nEnter temperature in Celsius: ");
scanf("%f",&cl);
fh= (cl*1.8)+32;
printf("\nTemperature in Fahrenheit: %.2f",fh);
}
else{
printf("\nInvalid Choice !!!");
}
return 0;
}```

### OUTPUT : :

```First Run:
1: Convert temperature from Fahrenheit to Celsius.
2: Convert temperature from Celsius to Fahrenheit.

Enter your choice (1, 2): 1

Enter temperature in Fahrenheit: 98.6

Temperature in Celsius: 37.00

Second Run:
1: Convert temperature from Fahrenheit to Celsius.
2: Convert temperature from Celsius to Fahrenheit.

Enter your choice (1, 2): 2

Enter temperature in Celsius: 37.0

Temperature in Fahrenheit: 98.60

Third Run:
1: Convert temperature from Fahrenheit to Celsius.
2: Convert temperature from Celsius to Fahrenheit.

Enter your choice (1, 2): 3

Invalid Choice !!!```

Above is the source code for C program to convert the temperature from Fahrenheit to Celsius and vice versa which is successfully compiled and run on Windows System.The Output of the program is shown above .

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