calculator

#include<iostream>

using namespace std;

int main() 

{ 

int a,b,s,op;  ; 

cout<<"\t\t\t\tCALCULATOR\n\t\t\tAll Rights Reserved\a\n"; 

cout<<"\t\tIllegal Copying is punishable and u would be sent as a prisoner";

cout<<"\t\t\t to kendriya vidyalaya no 1 naval base\a\nEnter Number A\a :"; 

cin>>a; 

cout<<"\nEnter Number B\a :"; 

cin>>b; 

cout<<endl<<"\t\t1.Addition\n\t\t2.Subtraction\n\t\t"; 

cout<<"3.Division(Whole Numbers only)\n\t\t4.Multiplication\n\t\t"; 

cout<<"5.Square of A\n\t\t6.Square of B\n\t\t"; 

cout<<"7.'A'square - 'B'square\n\t\t8.'A'square + 'B'square\n\t\t"; 

cout<<"9.'A'square * 'B'square\n\t\t10.'A'square / 'B'square(whole numbers only"; 

cout<<"\n\t\t11.'A'cube\n\t\t12.'B'cube"; 

cout<<endl<<" Enter Choice\a :"; 

cin>>op; 

switch(op) 

{ 

case 1:s=a+b; 

     cout<<"Sum = \a"<<s; 

     break; 

case 2:s=a-b; 

     cout<<"Difference =\a "<<s; 

     break; 

     case 3:s=a/b; 

     cout<<"Quotient =\a "<<s; 

     break; 

case 4:s=a*b; 

     cout<<"Product =\a "<<s; 

     break; 

case 5:s=a*a; 

     cout<<"Square =\a "<<s; 

     break; 

case 6:s=b*b; 

     cout<<"Square =\a "<<s; 

     break; 

case 7:s=(a*a)-(b*b); 

     cout<<"Answer =\a "<<s; 

     break; 

case 8:s=(a*a)+(b*b); 

     cout<<"Answer =\a "<<s; 

     break; 

case 9:s=(a*a)*(b*b); 

     cout<<"Answer =\a "<<s; 

     break; 

case 10:s=(a*a)/(b*b); 

     cout<<"Answer =\a "<<s; 

     break; 

case 11:s=a*a*a; 

     cout<<"Answer =\a "<<s; 

     break; 

case 12:s=b*b*b; 

     cout<<"Answer =\a "<<s; 

     break; 

default:cout<<"Invalid\a Choice\a"; 

} 

return 0; 

}                        

 output

• temperature conversion

#include<iostream>

using namespace std;

int main()

{

int choice,covtemp,temp;

cout<<"themprature conversion menu\n";

cout<<"1.fahrenheit to celsius\n";

cout<<"2.celsius to farenheit\n";

cout<<"enter ur choice:\n\a";

cin>>choice;

switch(choice)

{

case 1:

cout<<" enter the temp in fahrenheit\n";

cin>>temp;

covtemp=(temp-32)/1.8;

cout<<"the temp in celsius is"<<covtemp;

          break;

 case 2:

  cout<<"enter the temp in celsius\n";

   cin>>temp;

   covtemp=(temp-1.8)/32;

   cout<<" themp in fahrenheit is"<<covtemp;

   break;

   } 

   return 0;

}

  

• to check whether the character is a vowel

#include<iostream>

using namespace std;

int main()

{

char a;

int v=0;

cout<<" enter a character\a\n";

cin>>a;

switch(tolower(a))

{

case 'a':

          case 'e':

          case 'i':

          case 'o':

          case 'u':

          v++;break;

}

if(v>0)

cout<<"itz a vowel";

else

cout<<" itz not a vowel";

return 0;

}