Assignment3

Library Functions [SET – 1]

#include <iostream>
#include <cmath>
using namespace std;

int main() {
    double principal, rate, time, compoundInterest;
    cout << "Enter Principal: ";
    cin >> principal;
    cout << "Enter Rate: ";
    cin >> rate;
    cout << "Enter Time: ";
    cin >> time;

    compoundInterest = principal * pow((1 + rate / 100), time) - principal;

    cout << "Compound Interest: " << compoundInterest;
    return 0;
}

#include <iostream>
#include <cmath>
using namespace std;

int main() {
    double a, b, c, s, area;
    cout << "Enter three sides of the triangle: ";
    cin >> a >> b >> c;

    s = (a + b + c) / 2;
    area = sqrt(s * (s - a) * (s - b) * (s - c));

    cout << "Area of the triangle: " << area;
    return 0;
}

#include <iostream>
#include <cctype>
using namespace std;

int main() {
    char ch;
    cout << "Enter a character: ";
    cin >> ch;

    if (isalpha(ch)) {
        cout << ch << " is an alphabet.";
    } else if (isdigit(ch)) {
        cout << ch << " is a digit.";
    } else {
        cout << ch << " is a special character.";
    }
    return 0;
}

#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

int main() {
    srand(time(0)); // Seed for random number generator
    int randomNum = 10 + rand() % 91; // Generate a number between 10 and 100
    cout << "Random Number: " << randomNum;
    return 0;
}

#include <iostream>
#include <cctype>
using namespace std;

int main() {
    char ch;
    cout << "Enter a letter: ";
    cin >> ch;

    if (islower(ch)) {
        ch = toupper(ch);
    }
    cout << "Uppercase Letter: " << ch;
    return 0;
}

#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

int main() {
    srand(time(0));
    int number = 1 + rand() % 100; // Random number between 1 and 100
    int guess, attempts = 0;

    cout << "Guess the number between 1 and 100: " << endl;

    do {
        cout << "Enter your guess: ";
        cin >> guess;
        attempts++;

        if (guess < number) {
            cout << "Too low!" << endl;
        } else if (guess > number) {
            cout << "Too high!" << endl;
        } else {
            cout << "Congratulations! You guessed the number in " << attempts << " attempts." << endl;
        }
    } while (guess != number);

    return 0;
}