C++ ...I've got this code to figure impedances of different wiring methods for car subwoofers:?

//Calculate the ohms resistance of various wiring methods.








#include%26lt;iostream%26gt;


#include%26lt;iomanip%26gt;


using namespace std;





float vc,vcimp,p,s1,spimp;





int main()


{





cout%26lt;%26lt;"How many voice coils are there?";


cin%26gt;%26gt;vc;


if(vc%26lt;2)


{


cout%26lt;%26lt;"CANNOT CALCULATE INPEDANCE LEVELS"%26lt;%26lt;endl;


cout%26lt;%26lt;"NOT ENOUGH VOICE COILS!!!"%26lt;%26lt;endl;


}


else


cout%26lt;%26lt;"What is the impedance of each coil?";


cin%26gt;%26gt;vcimp;





p=vcimp/vc;





cout%26lt;%26lt;"The parallel impedance of the "%26lt;%26lt;vc%26lt;%26lt;" voice coils is "%26lt;%26lt;p%26lt;%26lt;" ohm(s)."%26lt;%26lt;endl;





s1=vcimp*vc;





cout%26lt;%26lt;"The series impedance of the "%26lt;%26lt;vc%26lt;%26lt;" voice coils is "%26lt;%26lt;s1%26lt;%26lt;" ohm(s)."%26lt;%26lt;endl;





spimp=s1/p;





cout%26lt;%26lt;"The series/parellel impedance of the "%26lt;%26lt;vc%26lt;%26lt;" voice coils is "%26lt;%26lt;spimp%26lt;%26lt;" ohm(s)."%26lt;%26lt;endl;











system("pause");


return 0;


}








i want "vc" to be a whole # and reject decimals...any help??

C++ ...I've got this code to figure impedances of different wiring methods for car subwoofers:?
The easiest way is to change vc to an int type. cin will ignore everything after the decimal point. Alternatively, you could input "vc" as a string, check for a decimal, and error out if there is a decimal.





Go S Pimps!





BTW, it's good practice to keep your variables local, and avoid global variables at all costs.
Reply:vc a string? what? i would make vc a "Integer" a string will have no numeric value to it you might as well tell it dog*cat... becuase the value will be lost with a string. besides, loads are not always a even number. Report It