Program that convert ascii values to its character and upper case alphabets to lower case alphabets and vice versa

#include "stdafx.h"

#include "conio.h"

#include "stdio.h"

#include "iostream"

using namespace std;

void AsciiValue();

void Character();

void LowerToUpper();

void UpperToLower();

int _tmain(int argc, _TCHAR* argv[])

{

       int choice;

       char option;

       do

       {

              cout<<"press 1 to convert ascii value to character"<<endl;

              cout<<"press 2 to convert character to ascii value"<<endl;

              cout<<"press 3 to conver alphabet from lower to upper case"<<endl;

              cout<<"press 4 to conver alphabet from upper to lower case"<<endl;

              cout<<"press 5 for exit"<<endl;

              cout<<"enter your choice"<<endl;

              cin>>choice;

              switch(choice)

              {

              case 1:

                     AsciiValue();

                     break;

              case 2:

                     Character();

                     break;

              case 3:

                     LowerToUpper();

                     break;

              case 4:

                     UpperToLower();

                     break;

              case 5:

                     exit(0);

              default:

                     cout<<"nothing match";

              }

              cout<<"would u like to continue?";

              cin>>option;

       }while(option=='y'||option=='Y');

              getch();

}

void AsciiValue()

{

       char ch;

       int a;

       cout<<"enter a character"<<endl;

       cin>>ch;

       a=ch;

       cout<<a<<endl;

}

void Character()

{

       int a;

       cout<<"enter a number"<<endl;

       cin>>a;

       cout<<(char)a<<endl;

}

void LowerToUpper()

{

       char ch;

       int a;

       cout<<"enter a character in lower case";

       cin>>ch;

       a=ch-32;

       cout<<(char)a;

       getch();

}

void UpperToLower()

{

       char ch;

       int a;

       cout<<"enter a character in upper case";

       cin>>ch;

       a=ch+32;

       cout<<(char)a;

       getch();}

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Simplest calculator code which performs operations on two operands

#include "stdafx.h"

#include "conio.h"

#include "iostream"

#include "stdio.h"

using namespace std;

void AddNumber();

void AddIntegerNumer();

void AddRealNumber();

void AddCharNumber();

void SubtractNumber();

void MultiplyNumber();

void DivideNumber();

void ModulusNumber();

int _tmain(int argc, _TCHAR* argv[])

{

       char choice;

       char option;

       do

       {

              cout<<"press + to add two numbers"<<endl;

              cout<<"press - to subtract two numbers"<<endl;

              cout<<"press * to multiply two numbers"<<endl;

              cout<<"press / to divide two numbers"<<endl;

              cout<<"press % to take modulus of two numbers"<<endl;

              cout<<"press # for exit"<<endl;

              cout<<"enter your choice"<<endl;

              cin>>choice;

              switch(choice)

              {

              case '+':

                           {

                           int choice;

                           do

                           {

                                  cout<<"press 1 for integer nubmer addition"<<endl;

                    cout<<"press 2 for real number addition"<<endl;

                                  cout<<"press 3 for char number addition"<<endl;

                                  cout<<"press 4 for exit"<<endl;

                                  cout<<"enter your choice"<<endl;

                                  cin>>choice;

                                  switch(choice)

                                  {

                                  case 1:

                                         AddIntegerNumer();

                                         break;

                                  case 2:

                                         AddRealNumber();

                                         break;

                                  case 3:

                                         AddCharNumber();

                                         break;

                                  case 4:

                                         exit(0);

                                  default:

                                         cout<<"nothing match"<<endl;

                                  }

                                  cout<<"would you like to continue? press y or Y";

                                  cin>>option;

              }while(option=='y'||option=='Y');

                                 

                     }

                     break;

              case '-':

                     SubtractNumber();

                     break;

              case '*':

                     MultiplyNumber();

                     break;

              case '/':

                     DivideNumber();

                     break;

              case '%':

                     ModulusNumber();

                     break;

              case '#':

                     exit(0);

              default:

                     cout<<"nothing match"<<endl;

              }

                     cout<<"would you like to continue? press y or Y";

                     cin>>option;

              }while(option=='y'||option=='Y');

      

       getch();

}

void AddIntegerNumer()

{

       int n1,n2;

       int sum=0;

       cout<<"enter n1 and n2"<<endl;

       cin>>n1>>n2;

       sum=n1+n2;

       cout<<"sum="<<sum<<endl;

}

void AddRealNumber()

{

       int n1,n2;

       int sum=0;

       cout<<"enter n1 and n2"<<endl;

       cin>>n1>>n2;

       sum=n1+n2;

       cout<<"sum="<<sum<<endl;

}

void AddCharNumber()

{

       char ch1,ch2;

       int sum=0;

       cout<<"enter ch1 and ch2"<<endl;

       cin>>ch1>>ch2;

       sum=ch1+ch2;

       cout<<"sum="<<sum<<endl;

}

void SubtractNumber()

{

       int n1,n2;

       int subtract=0;

       cout<<"enter n1 and n2"<<endl;

       cin>>n1>>n2;

       subtract=n1-n2;

       cout<<"subtract="<<subtract<<endl;

}

void MultiplyNumber()

{

       int n1,n2;

       int multiply;

       cout<<"enter n1 and n2"<<endl;

       cin>>n1>>n2;

       multiply=n1*n2;

       cout<<"multiply="<<multiply<<endl;

}

void DivideNumber()

{

       int n1,n2;

       int division;

       cout<<"enter n1 and n2"<<endl;

       cin>>n1>>n2;

       division=n1/n2;

       cout<<"division="<<division<<endl;

}

void ModulusNumber()

{

       int n1,n2;

       int modulus;

       cout<<"enter n1 and n2"<<endl;

       cin>>n1>>n2;

       modulus=n1/n2;

       cout<<"modulus="<<modulus<<endl;

}

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Program that takes three radii of circles and displays their areas

#include "stdafx.h"

#include "conio.h"

#include "stdio.h"

#include "iostream"

using namespace std;

void Area_1();

void Area_2();

void Area_3();

int _tmain(int argc, _TCHAR* argv[])

{

        Area_1();

        Area_2();

        Area_3();

        getch();

}

void Area_1()

{

       float a,r,p;                  ////// a is area , r is radius and p is pi ( 3.14 )

       p=3.14;

       cout<<"enter radius1"<<endl;

       cin>>r;

       a=p*r*r;

       cout<<"a1="<<a<<endl;

}

void Area_2()

{

       float a,r,p;

       p=3.14;

       cout<<"enter radius2"<<endl;

       cin>>r;

       a=p*r*r;

       cout<<"a2="<<a<<endl;

}

void Area_3()

{

       float a,r,p;

       p=3.14;

       cout<<"enter radius3"<<endl;

       cin>>r;

       a=p*r*r;

       cout<<"a3="<<a<<endl;

}

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Program that inputs five numbers in float and convert them into nearest constant integer

#include "stdafx.h"
#include "conio.h"
#include "stdio.h"
#include "iostream"

using namespace std;

void Number_1();
void Number_2();
void Number_3();
void Number_4();
void Number_5();

int _tmain(int argc, _TCHAR* argv[])
{
Number_1();
Number_2();
Number_3();
Number_4();
Number_5();
getch();

}
void Number_1()
{
int a;
float b;
cout<<"enter number1 in float"<<endl;
cin>>b;
a=b;
cout<<"a1="<<a<<endl;
}
void Number_2()
{
int a;
float b;
cout<<"enter numbe2 in float"<<endl;
cin>>b;
a=b;
cout<<"a2="<<a<<endl;
}
void Number_3()
{
int a;
float b;
cout<<"enter number3 in float"<<endl;
cin>>b;
a=b;
cout<<"a3="<<a<<endl;
}
void Number_4()
{
int a;
float b;
cout<<"enter number4 in float"<<endl;
cin>>b;
a=b;
cout<<"a4="<<a<<endl;
}
void Number_5()
{
int a;
float b;
cout<<"enter number5 in float"<<endl;
cin>>b;
a=b;
cout<<"a5="<<a<<endl;
}

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Program to calculate temperature from Celsius to Fahrenheit grade of five numbers

#include "stdafx.h"

#include "conio.h"

#include "stdio.h"

#include "iostream"

using namespace std;

void Temperature_1();

void Temperature_2();

void Temperature_3();

void Temperature_4();

void Temperature_5();

int _tmain(int argc, _TCHAR* argv[])

{

        Temperature_1();

        Temperature_2();

        Temperature_3();

        Temperature_4();

        Temperature_5();

        getch();

}

void Temperature_1()

{

       float c,f;

       cout<<"enter temperature in celsius1"<<endl;

       cin>>c;

       f=(9/5)*c+32;

       cout<<"f1="<<f<<endl;

}

void Temperature_2()

{

       float c,f;

       cout<<"enter temperature in celsius2"<<endl;

       cin>>c;

       f=(9/5)*c+32;

       cout<<"f2="<<f<<endl;

}

void Temperature_3()

{

       float c,f;

       cout<<"enter temperature in celsius3"<<endl;

       cin>>c;

       f=(9/5)*c+32;

       cout<<"f3="<<f<<endl;

}

void Temperature_4()

{

       float c,f;

       cout<<"enter temperature in celsius4"<<endl;

       cin>>c;

       f=(9/5)*c+32;

       cout<<"f4="<<f<<endl;

}

void Temperature_5()

{

       float c,f;

       cout<<"enter temperature in celsius5"<<endl;

       cin>>c;

       f=(9/5)*c+32;

       cout<<"f5="<<f<<endl;

}

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