???? beginner

[leahknowles]

Hi all,

I have a test in the morning and cant get my program to compile any suggestions would be great!

#include <stdio.h>



float absoluteValue (float x)

{
	
if (x < 0)
	    
x = -x;
	
return (x);
}



//Function to compute the sqaure root of a number

 float  SquareRoot (float x)  

 {  
   
  float  guess   = 1.0;  
    
 float  epsilon = .00001;  

   
    
 while  ( absoluteValue((guess * guess) / x  - 1.0) >= epsilon )  
    
 guess = ( x / guess + guess ) / 2.0;  
  
   
 return guess;  

 } 


int main(void)

{

	
printf("SquareRoot (2.0) = %2.f\n", SqaureRoot (2.0));
	
printf("SquareRoot (144.0) = %2.f\n",SquareRoot (144.0));
	
printf("SquareRoot (17.5) = %2.f\n", SqaureRoot (17.5));

	

return 0;
}

//compiler error
prog8.5.c: In function ‘main’:
prog8.5.c:29: warning: format ‘%2.f’ expects type ‘double’, but argument 2 has type ‘int’
prog8.5.c:31: warning: format ‘%2.f’ expects type ‘double’, but argument 2 has type ‘int’
/tmp/ccL4vQGf.o: In function `main':
prog8.5.c:(.text+0x98): undefined reference to `SqaureRoot'
prog8.5.c:(.text+0xd5): undefined reference to `SqaureRoot'
collect2: ld returned 1 exit status

[bithub]

prog8.5.c.text+0x98): undefined reference to `SqaureRoot'

Are you telling me that this isn't enough information for you to fix this on your own? Look at the 'a' and 'u'...

[cas]

Since you're using gcc, you should be using the -Wall flag. Always build with -Wall, as it will give you extra warnings that are, for the most part, extremely useful.

[leahknowles]

thanks that fixed the problem silly things like that ey you dont realise thanks for your time