#include <stdio.h>
int main()
{
char str[] = "256";
int iVal= 0;
double dVal= 0;
printf("IsInteger :");
printf("\niVal :\n");
if(sscanf(str, "%d", &iVal))
printf("true %d", iVal);
else
printf("false");
printf("\ndVal :\n");
if(sscanf(str, "%lf", &dVal))
printf("true %lf", dVal);
else
printf("false");
getchar();
return 0;
}