Question

If Else C coding program. Write a program to choose wehter to convert Celsius to Fahrenheit or Fahrenheit to Celsius. If the user chooses neither of the two options, the program will exit the while loop and terminate.

Answer 1

#include <stdio.h>

double getF(double celsius){
   return ((9.0 / 5.0) * celsius + 32);
}

double getC(double fahrenheit){
   return (5.0/9.0*(fahrenheit-32));
}

int main()
{
   double temp, end = -1;
   char ch, flush;
   while(1){
      printf("Enter the temparature or -1 to exit: ");
      scanf("%lf",&temp);
      if(temp == end){
         return;
      }
      scanf("%c",&flush);
      printf("C or F: ");
      scanf("%c",&ch);
      if(ch == 'F'){
         printf("%lf F = %lf C\n", temp, getC(temp));
      }
      else{
         printf("%lf C = %lf F\n", temp, getF(temp));
      }
   }
   return 0;
}