c - Calling Struct to main function from header file -

c - Calling Struct to main function from header file -

i have 2 header files , main program.

header files data.h , flight.h. main programme calculateflight.c.

the info header file has set of typedef structs contains variables required programme run.

i have created headerfile named flightmodel.h contains following:

#ifndef __flight_model_h #define __flight_model_h #include "data.h" void calculateflight(speedparamstype *speed, spinparamstype *spin, flightparamstype *fdata); #endif

the data.h contains typedef structs like

typedef struct { float totalspin; float spinaxis; float backspin; float sidespin; } spinparamstype;

there no errors in struct variables, don't know how phone call struct within main function.

void main() { speedparamstype speed; spinparamstype spin; flightparamstype fdata; speed.totalspeed=200.0f; speed.launchangle=30.0f; speed.horizontalangle=5.0f; spin.totalspin=1000.0f; flightparamstype fdata; fdata.carry= calculateflightmodel(&speed,&spin,&fdata); getch(); }

this have done in main function.it shows error c2275: 'flightparamstype' : illegal utilize of type look see declaration of 'flightparamstype'; syntax error : missing ';' before identifier 'fdata'

here's 1 illustration of usage, note besides #include directive, there's nil special needs done.

#include "flight.h" int main(int argc, char *argv[]) { spinparamstype = {1.0f, 1.0f, 1.0f, 1.0f}; spinparamstype b = {2.0f, 2.0f, 2.0f, 2.0f}; flightparamstype c; // don't know kind of members struct have. calculateflight(&a, &b, &c); homecoming 0; }

remember compile source code files , link them together

c struct