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IF/ELSE not working

May 30, 2013 at 11:48pm
haind01 (4)
Write your question here.
I am new at C++ and having problems with this code, it always takes the first option on the IF even if I hardcode the option to a different number, any ideas?


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  int main()
{
	void calcfar(int inputtemp); /* subroutine to calculate f degrees to c degrees */
	void calccel(int inputtemp); /* subroutine to calculate c degrees to f degrees */
	wchar_t selection='1';
	int temperature;
	printf( "Temperature conversion \n");
	printf( "Please choose one of the following \n");
	printf( "1 = Farhenheit to Celsius conversion \n");
	printf( "2 = Celsius to Farhenheit conversion \n");
	printf( "Enter any other key to exit: ");
	scanf("%c", &selection);
	printf( "Enter the temperature that you would like to convert: ");
	scanf_s("%i", &temperature);
	if (selection = '2')
		calccel(temperature); /* call celsius conversion */
	else if(selection = '1')
			calcfar(temperature); /* call farhenheit conversion */
	else 
		printf("Exiting program\n");
	return(0);
 } /* end main */
void calcfar(int inputtemp)
{
	int converttemp;
	converttemp = (inputtemp -32) * (5.0/9.0);
	printf("The Fahrenheit/Celsius conversion is %3f %06.3f\n", converttemp);
	return;
} /* end function */
void calccel(float inputtemp)
{
	float converttemp;
	converttemp = (9.0/5.0) * (inputtemp + 32);
	/* printf( "The Celsius/Fahrenheit conversion is %3f %6.3f\n", converttemp); */
	printf("The Celsius conversion is %f\n", converttemp);
	return;
} /* end function */
May 30, 2013 at 11:50pm
Zhuge (4664)
You are doing assignment in your if statement checks. Use == for comparison.
May 30, 2013 at 11:55pm
closed account (jyU4izwU)
You Must Have x2 "="Try This: 
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  int main()
{
	void calcfar(int inputtemp); /* subroutine to calculate f degrees to c degrees */
	void calccel(int inputtemp); /* subroutine to calculate c degrees to f degrees */
	wchar_t selection='1';
	int temperature;
	printf( "Temperature conversion \n");
	printf( "Please choose one of the following \n");
	printf( "1 = Farhenheit to Celsius conversion \n");
	printf( "2 = Celsius to Farhenheit conversion \n");
	printf( "Enter any other key to exit: ");
	scanf("%c", &selection);
	printf( "Enter the temperature that you would like to convert: ");
	scanf_s("%i", &temperature);
	if (selection == '2')
		calccel(temperature); /* call celsius conversion */
	else if(selection == '1')
			calcfar(temperature); /* call farhenheit conversion */
	else 
		printf("Exiting program\n");
	return(0);
 } /* end main */
void calcfar(int inputtemp)
{
	int converttemp;
	converttemp = (inputtemp -32) * (5.0/9.0);
	printf("The Fahrenheit/Celsius conversion is %3f %06.3f\n", converttemp);
	return;
} /* end function */
void calccel(float inputtemp)
{
	float converttemp;
	converttemp = (9.0/5.0) * (inputtemp + 32);
	/* printf( "The Celsius/Fahrenheit conversion is %3f %6.3f\n", converttemp); */
	printf("The Celsius conversion is %f\n", converttemp);
	return;
} /* end function */
May 31, 2013 at 12:03am
haind01 (4)
Shows you how new I am, I thought == meant not =. Thank you for helping me out.
May 31, 2013 at 12:27am
closed account (jyU4izwU)
No Problem, One Day You will Be The One Showing People.
Last edited on May 31, 2013 at 12:27am
May 31, 2013 at 1:08am
BradleyHeat (23)
For future reference, if you want 'not equal' use !=
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