Assignment2_2

Flow of Control [Set – 2]

#include <iostream>
using namespace std;

int main() {
    for (int i = 1; i <= 10; i++) {
        cout << i << " ";
    }
    return 0;
}
                        

#include <iostream>
using namespace std;

int main() {
    int sum = 0;
    for (int i = 1; i <= 10; i++) {
        sum += i;
    }
    cout << "Sum of first 10 natural numbers: " << sum;
    return 0;
}
                        

#include <iostream>
using namespace std;

int main() {
    int n, factorial = 1;
    cout << "Enter a number: ";
    cin >> n;
    for (int i = 1; i <= n; i++) {
        factorial *= i;
    }
    cout << "Factorial: " << factorial;
    return 0;
}
                        

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

int main() {
    int base, exponent, result;
    cout << "Enter base: ";
    cin >> base;
    cout << "Enter exponent: ";
    cin >> exponent;
    result = pow(base, exponent);
    cout << base << "^" << exponent << " = " << result;
    return 0;
}
                        

#include <iostream>
using namespace std;

int main() {
    int num, reversed = 0;
    cout << "Enter a number: ";
    cin >> num;
    while (num != 0) {
        reversed = reversed * 10 + num % 10;
        num /= 10;
    }
    cout << "Reversed number: " << reversed;
    return 0;
}
                        

#include <iostream>
using namespace std;

int main() {
    int num, sum = 0;
    cout << "Enter a number: ";
    cin >> num;
    while (num != 0) {
        sum += num % 10;
        num /= 10;
    }
    cout << "Sum of digits: " << sum;
    return 0;
}
            

#include <iostream>
using namespace std;

int main() {
    int num, i, flag = 1;
    cout << "Enter a number: ";
    cin >> num;
    if (num <= 1) {
        flag = 0;
    } else {
        for (i = 2; i <= num / 2; i++) {
            if (num % i == 0) {
                flag = 0;
                break;
            }
        }
    }
    if (flag) {
        cout << num << " is a prime number.";
    } else {
        cout << num << " is not a prime number.";
    }
    return 0;
}
            

#include <iostream>
using namespace std;

int main() {
    int a, b, hcf;
    cout << "Enter two numbers: ";
    cin >> a >> b;
    for (int i = 1; i <= a && i <= b; i++) {
        if (a % i == 0 && b % i == 0) {
            hcf = i;
        }
    }
    cout << "HCF: " << hcf;
    return 0;
}
            

#include <iostream>
using namespace std;

int main() {
    int num, positive = 0, negative = 0, zero = 0;
    char choice;
    do {
        cout << "Enter a number: ";
        cin >> num;
        if (num > 0) positive++;
        else if (num < 0) negative++;
        else zero++;
        cout << "Do you want to enter another number (y/n)? ";
        cin >> choice;
    } while (choice == 'y' || choice == 'Y');
    cout << "Positive: " << positive << ", Negative: " << negative << ", Zeros: " << zero;
    return 0;
}
            

#include <iostream>
using namespace std;

int main() {
    int num, maxNum = INT_MIN, minNum = INT_MAX;
    char choice;
    do {
        cout << "Enter a number: ";
        cin >> num;
        if (num > maxNum) maxNum = num;
        if (num < minNum) minNum = num;
        cout << "Do you want to enter another number (y/n)? ";
        cin >> choice;
    } while (choice == 'y' || choice == 'Y');
    cout << "Maximum: " << maxNum << ", Minimum: " << minNum;
    return 0;
}
            

#include <iostream>
using namespace std;

int main() {
    cout << "Armstrong numbers between 1 and 500 are: ";
    for (int num = 1; num <= 500; num++) {
        int sum = 0, temp = num, digit;
        while (temp != 0) {
            digit = temp % 10;
            sum += digit * digit * digit;
            temp /= 10;
        }
        if (sum == num) {
            cout << num << " ";
        }
    }
    return 0;
}
            

#include <iostream>
using namespace std;

int main() {
    int n, a = 0, b = 1, next;
    cout << "Enter the number of terms: ";
    cin >> n;
    cout << "Fibonacci Series: " << a << " " << b << " ";
    for (int i = 3; i <= n; i++) {
        next = a + b;
        cout << next << " ";
        a = b;
        b = next;
    }
    return 0;
}
            

#include <iostream>
using namespace std;

int main() {
    int n;
    double sum = 0.0;
    cout << "Enter the value of n: ";
    cin >> n;
    for (int i = 1; i <= n; i++) {
        sum += 1.0 / i;
    }
    cout << "Sum of the series is: " << sum;
    return 0;
}
            

#include <iostream>
using namespace std;

int main() {
    int n;
    double sum = 0.0;
    cout << "Enter the value of n: ";
    cin >> n;
    for (int i = 1; i <= n; i++) {
        if (i % 2 == 0) {
            sum -= 1.0 / i;
        } else {
            sum += 1.0 / i;
        }
    }
    cout << "Natural log of 2 up to " << n << " terms is: " << sum;
    return 0;
}