C++

  // Write a program that takes a character as input and outputs whether it is a digit, // a lowercase letter, an uppercase letter, or a special character using switch // statement #include <iostream> using namespace std ; int main () {     char input ;     cout << "Enter a character: " ;     cin >> input ;     switch ( input ){         case 'A' ... 'Z' :         cout << "This is an uppercase letter \n " ;         break ;         case 'a' ... 'z' :         cout << "This is a lowercase letter \n " ;         break ;         case '0' ... '9' :         cout << "This is a digit \n " ;         break ;         default :         cout << "This is a special character \n " ...

  // Write a program that takes three integer inputs from the user, // and then checks if any two of them are equal. // If so, the program should print out "Two numbers are equal" otherwise, // it should print "All numbers are different". #include <iostream> using namespace std ; int main () {     int numa , numb , numc ;     cout << "Enter the first integer: " ;     cin >> numa ;     cout << "Enter the second integer: " ;     cin >> numb ;     cout << "Enter the third integer: " ;     cin >> numc ;     if ( numa == numb && numa == numc )     {         cout << "All three integers are equal \n " ;     }     else if ( numa == numb || numb == numc || numc == numa )     {         cout << "Two numbers are equal \n " ;     } ...

  // Write a program that takes the temperature in Celsius and // converts it to Fahrenheit or vice versa, depending on user input. #include <iostream> using namespace std ; int main () {     char choose ;     float temp_c , temp_f ;     cout << "Choose \n 'F' or 'f' for fahrenhiet \n 'C' or 'c' for celcius \n " ;     cin >> choose ;     if ( choose == 'C' || choose == 'c' )     {         cout << "Enter the temperature in Celcius: " ;         cin >> temp_c ;     }     else if ( choose == 'F' || choose == 'f' )     {         cout << "Enter the temperature in fahrenhiet: " ;         cin >> temp_f ;     }     else     {         cout << "Invalid Input \n " ;         return...

  // Make a rock paper scissors game #include <iostream> #include <ctime> using namespace std ; int main (){         int computer_move ;         char user_move ;         cout << "Choose 'r' for rock, 'p' for paper or 's' for scissors: " ;             cin >> user_move ;         computer_move = time ( 0 )% 3 ;             if ( computer_move == 1 ){                 computer_move = 'r' ;             }             else if ( computer_move == 2 ){                 computer_move = 's' ;             }             else computer_move = 'p' ;                      ...

// Write a program to check if a year is leap year or not. // If a year is divisible by 4 then it is leap year but if the year is // century year like 2000, 1900, 2100 then it must be divisible by 400. #include < iostream > using namespace std ; int main () {     int year ;     cout << " Enter an year: " ;     cin >> year ;     if (( year % 4 == 0 && year % 100 != 0 ) || year % 400 == 0 )     {         cout << " This is a leap year \n " ;     }     else         cout << " This is not a leap year \n " ;     return 0 ; } Input 1: Enter an year: 300 Output 1: This is not a leap year Input 2: Enter an year: 400 Output 2: This is a leap year   Input 3: Enter an year: 2001 Output 3: This is not a leap year Input 4: Enter an year: 2400 Output 4: This is a leap year

  // Ask user to enter age, sex ( M or F ), marital status ( Y or N ) and then using following rules print their place of service. // if employee is female, then she will work only in urban areas. // if employee is a male and age is in between 20 to 40 then he may work in anywhere // if employee is male and age is in between 40 t0 60 then he will work in urban areas only. // And any other input of age should print "ERROR". #include <iostream> using namespace std ; int main (){         int age ;         char sex , marriage ;         cout << "Enter your age: " ;         cin >> age ;             if ( age >= 20 && age <= 60 ){                 cout << "Enter your sex 'm' or 'f': " ;                 cin >> sex ;         ...

      // Write a program to check whether a entered character is lowercase ( a to z ) or uppercase ( A to Z ). #include <iostream> using namespace std ; int main (){         char letter ;         cout << "Enter the alphabet: " ;         cin >> letter ;         if ( letter >= 'A' && letter <= 'Z' ){             cout << "The alphabet is uppercase \n " ;         }         else if ( letter >= 'a' && letter <= 'z' ){             cout << "The alphabet is lowercase \n " ;         }         else cout << "This is not an alphabet \n " ;     return 0 ; } Input 1: Enter the alphabet: F Output 1: The alphabet is uppercase Input 2: Enter the alphabet: d Output 2: The alph...

    // PREVIOUS QUESTION: // A student will not be allowed to sit in exam if his/her attendence is less than 75%. // Take following input from user // Number of classes held // Number of classes attended. // And print // percentage of class attended // Is student is allowed to sit in exam or not. // NEW QUESTION : // Modify the above question to allow student to sit if he/she has medical cause. // Ask user if he/she has medical cause or not ( 'Y' or 'N' ) and print accordingly. #include <iostream> using namespace std ; int main (){         int classes_held , classes_attended , percentage ;         char medical_cause ;             cout << "Enter the number of classes held: " ;             cin >> classes_held ;             cout << "Enter the number of classes attended: " ;             cin ...

  // A student will not be allowed to sit in exam if his/her attendence is less than 75%. // Take following input from user // Number of classes held // Number of classes attended. // And print // percentage of class attended // Is student is allowed to sit in exam or not. #include <iostream> using namespace std ; int main (){         int classes_held , classes_attended , percentage ;             cout << "Enter the number of classes held: " ;             cin >> classes_held ;             cout << "Enter the number of classes attended: " ;             cin >> classes_attended ;             percentage = ( classes_attended * 100 ) / classes_held ;             cout << "Your attendence is " << percentage << "%" << endl;   ...

  // Write a program to print absolute value of a number entered by user. E.g.- // If-> INPUT: 1        Then-> OUTPUT: 1 // If-> INPUT:-1        Then-> OUTPUT: 1 #include <iostream> using namespace std ; int main (){         float number , absolute ;             cout << "Enter the number: " ;             cin >> number ;             if ( number < 0 ){                 absolute = - 1 * number ;                 cout << "The absolute value of " << number << " is: " << absolute <<endl;             }             else cout << "The absolute value of " << number << " is " << number <<endl;   ...

  // Write a program to print absolute value of a number entered by user. E.g.- // If-> INPUT: 1        Then-> OUTPUT: 1 // If-> INPUT:-1        Then-> OUTPUT: 1 #include < iostream > #include < cmath > using namespace std ; int main () {     float number , absolute ;     cout << " Enter the number: " ;     cin >> number ;     absolute = abs ( number );     cout << " The absolute of " << number << " is: " << absolute ;     return 0 ; }

  // Take input of age and name of 3 people by user and determine oldest and youngest among them with his age. #include < iostream > using namespace std ; int main () {     string person_1 , person_2 , person_3 ;     int age_1 , age_2 , age_3 ;     cout << " Enter the name of first person: " ;     getline ( cin >> ws , person_1 );     cout << " Enter his age: " ;     cin >> age_1 ;         cout << " \n Enter the the name of second person: " ;     getline ( cin >> ws , person_2 );     cout << " Enter his age: " ;     cin >> age_2 ;         cout << " \n Enter the name of third person: " ;     getline ( cin >> ws , person_3 );     cout << " Enter his age: " ;     cin >> age_3 ;     if ( age_1 > age_2 )   ...

      // The School has following rules for grading system: // a. Below 25 - F // b. 25 to 45 - E // c. 46 to 50 - D // d. 51 to 60 - C // e. 61 to 80 - B // f. Above 80 - A // Ask user to enter marks and print the corresponding grade. #include <iostream> using namespace std ; int main (){         float total_marks , obtained_marks , percentage ;         cout << "Enter obtained marks: " ;         cin >> obtained_marks ;         cout << "Enter total marks: " ;         cin >> total_marks ;                 percentage = ( obtained_marks / total_marks ) * 100 ;             if ( percentage < 25 ){                 cout << "Your grade is: 'F'" << endl << " \n Better luck next time \n " ;        ...