/*
   DemoDatatypes1.cpp
   CIS 150
   5/29/2008
   David Klick
   
   This program shows the range of the basic integer data types.
   The output will differ depending on what compiler is used.   
*/

#include <climits>
#include <iostream>
using std::cin;
using std::cout;
using std::endl;

void cont();

int main(void) {
   // declare and initialize variables
   short minShort = SHRT_MIN;
   short maxShort = SHRT_MAX;
   int minInt = INT_MIN;
   int maxInt = INT_MAX;
   long minLong = LONG_MIN;
   long maxLong = LONG_MAX;
   unsigned short minUShort = 0;
   unsigned short maxUShort = USHRT_MAX;
   unsigned int minUInt = 0;
   unsigned int maxUInt = UINT_MAX;
   unsigned long minULong = 0;
   unsigned long maxULong = ULONG_MAX;
   
   // display internal sizes of data types
   cout << "A short is " << sizeof(short) << " bytes long\n";
   cout << "An int is " << sizeof(int) << " bytes long\n";
   cout << "A long is " << sizeof(long) << " bytes long\n";
   cout << "An unsigned short is " << sizeof(unsigned short) << " bytes long\n";
   cout << "An unsigned int is " << sizeof(unsigned int) << " bytes long\n";
   cout << "An unsigned long is " << sizeof(unsigned long) << " bytes long\n";
   
   // display ranges of basic integer data types
   cout << "short: " << minShort << " through " << maxShort << '\n';
   cout << "int: " << minInt << " through " << maxInt << '\n';
   cout << "long: " << minLong << " through " << maxLong << '\n';
   cout << "unsigned short: " << minUShort << " through " << maxUShort << '\n';
   cout << "unsigned int: " << minUInt << " through " << maxUInt << '\n';
   cout << "unsigned long: " << minULong << " through " << maxULong << '\n';
   
   cont();
   return 0;
}

void cont() {
   if (cin.rdbuf()->sungetc() != -1 && cin.get() != '\n') cin.ignore(80,'\n');
   cout << "Press Enter to continue...";
   cin.get();
   return;
}

/*
   Sample output:
   
   A short is 2 bytes long
   An int is 4 bytes long
   A long is 4 bytes long
   An unsigned short is 2 bytes long
   An unsigned int is 4 bytes long
   An unsigned long is 4 bytes long
   short: -32768 through 32767
   int: -2147483648 through 2147483647
   long: -2147483648 through 2147483647
   unsigned short: 0 through 65535
   unsigned int: 0 through 4294967295
   unsigned long: 0 through 4294967295
   Press Enter to continue...
*/