Hi guys,

Well, if you thought the datediff was weird, here is something i've done
some time ago when trying to grasp type casting.I thought i've lost it, 
dammit i didn't. In those days i was drinking light beer i think..:-)

#include 
#include 
#include 

#define OK           1
#define BADNUM       0

#define ASINT        0
#define ASUINT       1
#define ASLONG       2
#define ASULONG      3
#define ASDOUBLE     4


int getnum(int,void*);
char* getstr(char*,int);

main()
{
int a;unsigned int b;long c;unsigned long d;double e;
if(getnum(ASINT,&a) == OK) printf("\nInteger = %d\n",a);
if(getnum(ASUINT,&b) == OK) printf("\nUnsigned = %u\n",b);
if(getnum(ASLONG,&c) == OK) printf("\nLong = %ld\n",c);
if(getnum(ASULONG,&d) == OK) printf("\nUnsigned long = %lu\n",d);
if(getnum(ASDOUBLE,&e) == OK) printf("\nDouble = %f",e);
return 0;
}

int getnum(int type,void *num)
{
char *ptr;
char input[21];
printf("\nEnter a number :");
getstr(input,20);
if(!*input) return BADNUM;
switch(type)
{
 case ASINT      :*(int*) num = atoi(input);return OK;
 case ASUINT     :*(unsigned int*) num = atoi(input);return OK;
 case ASLONG     :*(long*) num = atol(input);return OK;
 case ASULONG    :*(unsigned long*)num = strtoul(input,&ptr,10);return OK;
 case ASDOUBLE   :*( double *)num = strtod(input,&ptr);return OK;
 default         : break;
 }
return BADNUM;
}

char* getstr(char *retstr, int len)
{
 fgets(retstr,len-1,stdin);
 retstr[strlen(retstr) - 1] = '\0';
 return retstr;
 }

Hm, on second look there is nothing really wrong with it.
                                                                    
 L8r Frank (fadam{at}ozemail.com.au)
 
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