Something

#include <stdio.h>


struct info{
	char *arch;
	char *os;
};

void getInfo( struct info *data){
	data->arch = (char*) getenv("PROCESSOR_ARCHITECTURE");
	if(data->arch ==NULL)data->arch = (char*)getenv("HOSTTYPE");
	data->os = (char*) getenv("OS");
	if(data->os ==NULL)data->os = (char*) getenv("OSTYPE");
}

void freeInfo(struct info *data){
//	if(data->arch!=NULL)free(data->arch);
//	if(data->os!=NULL)free(data->os);
}

void pc1(void){
	printf ("-----------------------------------------\n");
	printf("*** Intel Celeron x86-based PC ***\n\n");
	printf("Size of:\n\tshort int = 16\n\tint = 32\n\tlong int = 32\n\tlong long int = 64\n\tint * = 32\n");
	printf ("-----------------------------------------\n\n");
}

void sizeOf(void){
	short int SHORT_INT;
	int INT;
	long int LONG_INT;
	long long int LLONG_INT;
	int *PINT;
	printf("Size of:\n");
	printf("\tshort int = %i\n",sizeof(SHORT_INT)*8);
	printf("\tint = %i\n",sizeof(INT)*8);
	printf("\tlong int = %i\n",sizeof(LONG_INT)*8);
	printf("\tlong long int = %i\n",sizeof(LLONG_INT)*8);
	printf("\tint * = %i\n",sizeof(PINT)*8);
}

int main(void){

	
	struct info thisPC;

	getInfo(&thisPC);
	 
	
	 
	 
	 // size of ....
	printf("All sizes are in bits\n\n");

	printf("Other machines\n");
	pc1();

	printf ("-----------------------------------------\n");
	printf("*** This machine ***\n\n");
	(thisPC.arch !=NULL) ? printf("Arch: \t%s\n",thisPC.arch): printf("Arch: \tUnknown\n");
	
	(thisPC.os !=NULL) ? printf("OS: \t%s\n",thisPC.os): printf("OS: \tUnknown\n");
	
	sizeOf();
	printf ("-----------------------------------------\n\n");
	
	
	freeInfo(&thisPC);
	return 0;
}