C++ using Excellant Pro

Uninitialized Variables

#include 

#include

using namespace std;

int main() 

{

   int number;             

   cout << number << endl;                   

   return 0;

}

Size of Operator

#include .h>

#include

using namespace std;

int main() 

{

   cout << "sizeof(char) is " << sizeof(char) << " bytes " << endl;

   cout << "sizeof(short) is " << sizeof(short) << " bytes " << endl;

   cout << "sizeof(int) is " << sizeof(int) << " bytes " << endl;

   cout << "sizeof(long) is " << sizeof(long) << " bytes " << endl;

   cout << "sizeof(long long) is " << sizeof(long long) << " bytes " << endl;

   cout << "sizeof(float) is " << sizeof(float) << " bytes " << endl;

   cout << "sizeof(double) is " << sizeof(double) << " bytes " << endl;

   cout << "sizeof(long double) is " << sizeof(long double) << " bytes " << endl;

   cout << "sizeof(bool) is " << sizeof(bool) << " bytes " << endl;

   return 0;

}

Output

sizeof(char) is 1 bytes

sizeof(short) is 2 bytes

sizeof(int) is 4 bytes

sizeof(long) is 4 bytes

sizeof(long long) is 8 bytes

sizeof(float) is 4 bytes

sizeof(double) is 8 bytes

sizeof(long double) is 12 bytes

sizeof(bool) is 1 bytes

Header climits

#include 

#include

#include    

using namespace std;

int main() 

{

   cout << "Int max = " << int_max << endl;

   cout << "Int min = " << int_min << endl;

   cout << "Unsigned int max = " << uint_max << endl;

   cout << "Long long max = " << llong_max << endl;

   cout << "Long long min = " << llong_min << endl;

   cout << "Unsigned long long max = " << ullong_max << endl;

   cout << "Bits in char = " << char_bit << endl;

   cout << "Char max = " << char_max << endl;

   cout << "Char min = " << char_min << endl;

   cout << "Signed char max = " << schar_max << endl;

   cout << "Signed char min = " << schar_min << endl;

   cout << "Unsigned char max = " << uchar_max << endl;

   return 0;

}

Output

Int max = 2147483647

Int min = -2147483648

Unsigned int max = 4294967295

Long long max = 9223372036854775807

Long long min = -9223372036854775808

Unsigned long long max = 18446744073709551615

Bits in char = 8

Char max = 127

Char min = -128

Signed char max = 127

Signed char min = -128

Unsigned char max = 255

C++ Literals Program

#include 

#include

using namespace std;

int main() 

{

   char gender = 'm';             

   bool ismarried = true;         

   unsigned short numchildren = 8; 

   short yearofbirth = 1945;      

   unsigned int salary = 88000;   

   double weight = 88.88;       

   float gpa = 3.88f;           

   cout << "Gender is " << gender << endl;

   cout << "Is married is " << ismarried << endl;

   cout << "Number of children is " << numchildren << endl;

   cout << "Year of birth is " << yearofbirth << endl;

   cout << "Salary is " << salary << endl;

   cout << "Weight is " << weight << endl;

   cout << "GPA is " << gpa << endl;

   return 0;

}

Output

Gender is m

Is married is 1    

Number of children is 8

Year of birth is 1945

Salary is 88000

Weight is 88.88

GPA is 3.88

Mixed-Type Operations

#include 

#include

#include    

using namespace std;

int main() 

{

   int i1 = 2, i2 = 4;

   double d1 = 2.5, d2 = 5.0;

   cout << fixed << setprecision(1);  

   cout << i1 << " + " << i2 << " = " << i1+i2 << endl;  

   cout << d1 << " + " << d2 << " = " << d1+d2 << endl;  

   cout << i1 << " + " << d2 << " = " << i1+d2 << endl;  

   cout << i1 << " - " << i2 << " = " << i1-i2 << endl;  

   cout << d1 << " - " << d2 << " = " << d1-d2 << endl;  

   cout << i1 << " - " << d2 << " = " << i1-d2 << endl;  

   cout << i1 << " * " << i2 << " = " << i1*i2 << endl;  

   cout << d1 << " * " << d2 << " = " << d1*d2 << endl;  

   cout << i1 << " * " << d2 << " = " << i1*d2 << endl;  

   cout << i1 << " / " << i2 << " = " << i1/i2 << endl;  

   cout << d1 << " / " << d2 << " = " << d1/d2 << endl;  

   cout << i1 << " / " << d2 << " = " << i1/d2 << endl;  

   return 0;

}