Computer Programming

#include <iostream> using namespace std; int main() { int n; cin >> n; int arr[n]; for (int i = 0; i < n; i++) { cin >> arr[i]; } int temp = arr[n-1]; for (int i = n-1; i > 0; i--) { arr[i] = arr[i-1]; } arr[0] = temp; for (int i = 0; i < n; i++) { cout << arr[i] << " "; } return 0; }

#include <iostream> #include <vector> using namespace std; int main() { int n; cin >> n; int sum=0; int matrix[n][100]; for (int i = 0; i < n; i++) { sum = 0; for (int j = 0; j < n; j++) { cin >> matrix[i][j]; sum += matrix[i][j]; } } int sum2 = 0; bool magic = true; // row-based checking for (int i = 0; i < n-1; i++) { sum2 = 0; for (int j = 0; j < n; j++) { sum2 += matrix[i][j]; } if (sum2 != sum) { magic = false; cout << "Not Magic Square" << endl; break; } } // column based-cheking if (magic) { for (int i = 0; i < n; i++) { sum2 = 0; for (int j = 0; j < n; j++) { sum2 += matrix[j][i]; } if (sum2 != sum) { magic = false; cout << "Not Magic Square" << endl; break; } } } // diagonal based checking if (magic) { sum2 = 0; int sum3 = 0; for (int i = 0; i < n; i++) { sum2+=matrix[i][i]; sum3+=matrix[i][n-1-i]; } if (sum2 != sum) { magic = false; cout << "Not Magic Square" << endl; }else if (sum3 != sum) { magic = false; cout << "Not Magic Square" << endl; } } if (magic) { cout << "Magic Square" << endl; } return 0; }

Here is Final Preparation notes from CS102🫠 Hope they will be really useful for you!✨ Don’t forget to share with friends who take this course too!🫶🏻 @studyatelier #CS102#finalprep

This week lab: File handling & structure. It is lab work (not graded)

Codes

🎥Lesson 10 💻C++ Programming 📁 File Handling #cpp @cpp_sirius👨‍💻

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// problem 8 ofstream fnum("numbers.txt"); int k; for (int i = 0; i < 100; i++) { k = rand() % 100+1; fnum << k << endl; } fnum.close(); ifstream fmax("numbers.txt"); int num, max = 0; while (fmax>>num) { if (max < num) { max = num; } } cout << max << endl; fmax.close();

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