Hi

I'm trying to write a code that will a print a table of results

the values of first column are known so I put them using for loop

then i tried calling functions inside the loop to calculate the value fot the other columns

the problem is that the third function depends on the value of the first & second functions but the values can not be sent there !

here is the code

Code:#include <stdio.h> #include <stdlib.h> #include <math.h> #define PI 3.141592653589793238462 void get_values(double *, double*); void get_capacitance(double*, int, double); void get_inductance(double*, int, double); void get_attenuation(double,int, double, double); void get_attdb(double); int main(void) { double inductor, capacitor; int F; double capacitance, inductance, attenuation, attdb; get_values(&inductor, &capacitor); printf("L = %lf, C = %lf\n", inductor, capacitor); for (F=100;F<=1000;F=F+100) { printf("%i",F); printf("\t"); get_capacitance(&capacitance,F,capacitor); printf("%lf", capacitance); printf("\t"); get_inductance(&inductance,F,inductor); printf("%lf", inductance); printf("\t"); get_attenuation(attenuation,F, inductance, capacitance); printf("%lf", attenuation); printf("\t"); get_attdb(attenuation); printf("\t"); printf("\n"); } system("PAUSE"); return 0; } void get_values(double *L, double *C) { printf( "Please, enter the required inductor value"); scanf("%lf", L); printf("Please, enter the required capacitor value"); scanf("%lf", C); } void get_capacitance(double *capacitance, int frequency, double C) { *capacitance =(((1/(2 * PI * frequency * C)))); } void get_inductance(double *inductance, int frequency, double L) { *inductance = (2 * PI * frequency * L); } void get_attenuation(double attenuation,int F, double L, double C) { attenuation = (1/(1-(2*PI*F*2*PI*F*L*C))); } void get_attdb(double att) { printf("%lf",(20 * log10(att))); }

thanks in advance