Thread: lost! need some help!

What is your:
-OS
-compiler
-text editor or whatever

vista home premium
cygwin compiler
notepad as editor

if worse comes to worse can you help me with any other part of the code? will the output be correct? if not what do i need to do to fix it?

i can try to compile it tomorrow morning on the unix system before class.

If this is what you wanted to see:

Code:

a=5.600000, b=0.500000, c=1.000000
result=28.706667
a=7.300000, b=3.000000, c=3.300000
result=10.082542
a=6.000000, b=8.000000, c=6.500000
result=-91.487930
a=12.200000, b=10.300000, c=6.600000
result=-58.818336
a=2.000000, b=4.100000, c=8.400000
result=-200.039963
a=3.200000, b=4.300000, c=15.300000
result=-683.492065

Then this will work:

Code:

#include <stdio.h>
#include <math.h>
#define CONSTANT 5.9

int main () {

	float a[7] = { 5.6, 7.3, 6, 12.2, 2, 3.2 };
	float b[7] = { 0.5, 3, 8, 10.3, 4.1, 4.3 };
	float c[7] = { 1, 3.3, 6.5, 6.6, 8.4, 15.3 };
	float result;
	int i;

	for ( i = 0; i < 6; ++i ){
		result = CONSTANT*a[i]-2/(b[i]+c[i])-3*powf(c[i],2);
		printf ("a=%f, b=%f, c=%f\nresult=%f\n", a[i], b[i], c[i], result);
	}

	return 0;
}

Hopefully you can spot the differences; the first element of an array is 0, not 1. And the precision is slightly better if you actually use powf().

you do not need pow function to calculare squares.
just use

Code:

c[i]* c[i]