Thread: Temperature conversion

I'm new to this -- I couldn't find my original thread. so here goes:
This is the code I've written. I need the user to be able to make a choice of Celsius or Fahrenheit. Only one temperature at a time.
The ouput should be something like: 100 degrees Celsius is 212 degrees Fahrenheit

#include <stdio.h>

main()


{
float Fahrenheit, Celsius;


printf( "Enter a temperature in degrees\n" );
printf( "if in Fahrenheit enter F\n" );
printf( "if in Celsius enter C\n" );

scanf("%f%f", Celsius);


scanf( "%f%f", Fahrenheit);


return 0;

}

Please help me - I found my old message re temperature conversion but was unable to use it or move it. Can you help me with the previously submitted code?

I had to do a similar exercise in a CPP class a while back. Though this version has potential for disaster (namely a char entered as choice) it *might* offer something useful.

Code:

#include <stdio.h> 

void fTOc(float);
void cTOf(float);

int main(void)
{
	float userTemp;
	int choice;
	int control;
	
	control = 0;
		
	do
	{
	
	    printf("1) Convert a temperature to Celsius\n");
	    printf("2) Convert a temperature to Fahrenheit\n");
	    printf("3) Quit\n\n"); 
	
	    printf("Enter your choice: ");
	    scanf("%d", &choice); 
	    	
	    switch(choice)
	    {
	        case 1: printf("\nEnter the temp to convert: ");
	                scanf("%f", &userTemp);
	                fTOc(userTemp);
	                break;
		        
                case 2: printf("\nEnter the temp to convert: ");
                        scanf("%f", &userTemp);
                        cTOf(userTemp);
                        break;
		        
               case 3: control = 1;
                       break;
		
               default:  printf("\n%d is not a valid option.\n", choice);
                         break;
            }; 
		
            printf("\n");

        }while(control == 0);
        printf("\n\nUser ended program.");
        return 0;
	
} 

void cTOf(float temp)
{
    printf("\n%.2f degrees Celsius is %.2f degrees Fahrenheit.\n", temp, (32 + temp * 1.8));
}

void fTOc(float temp)
{
    printf("\n%.2f degrees Fahrenheit is %.2f degrees Celsius.\n", temp, (temp - 32) / 1.8);
}