## Problem Statement

Exercise 1-4: Write a program to print the corresponding Celsius to Fahrenheit table.

## Solution

This question is to do conversion from Celsius to Fahrenheit. It is opposite to question that was covered K&R Exercise 1.3 Print heading to temperature conversion program.

We know the formula for Fahrenheit to Celsius conversion

celsius = (5.0/9.0) * (fahr - 32.0)

Re-arranging the terms in terms of fahr

fahr = (9.0/5.0 * celsius) + 32.0

Re-writing code from K&R Exercise 1.3 Print heading to temperature conversion program  we can write program that is:

#include <stdio.h>
int main()
{
float fahr, celsius;
int lower, upper, step;

lower = 0;
upper = 300;
step = 20;

celsius = lower;

printf("     C   F\n");
printf("----------\n");
while(celsius <= upper) {
fahr = (9.0/5.0 * celsius) + 32.0;
printf("%6.1f %3.0f\n", celsius, fahr);
celsius = celsius + step;
}
return 0;
}


Output of the above program is

     C   F
----------
0.0  32
20.0  68
40.0 104
60.0 140
80.0 176
100.0 212
120.0 248
140.0 284
160.0 320
180.0 356
200.0 392
220.0 428
240.0 464
260.0 500
280.0 536
300.0 572


Next Article - K&R Exercise 1.5 Temperature conversion reverse order
Previous Article - K&R Exercise 1.3 Print heading to temperature conversion program

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