pb/z12

1sem/programming basics/z12/34.cpp

@@ -0,0 +1,33 @@
+// pb_z12_34.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <fstream>
+
+using namespace std;
+
+void make2d(size_t nrows, size_t ncols, int val, ostream &ost);
+
+int main() {
+    ofstream fout("out.txt", ios::trunc);
+    if (!fout.is_open())
+    {
+        cerr << "Unable to open file" << endl;
+        return 1;
+    }
+
+    size_t rows, cols;
+    int filler;
+    cout << "rows, cols, filling_val >>>";
+    cin >> rows >> cols >> filler;
+    make2d(rows, cols, filler, fout);
+    return 0;
+}
+
+void make2d(size_t nrows, size_t ncols, int val, ostream &ost) {
+    for(size_t i = 0; i < nrows; i++) {
+        for(size_t j = 0; j < ncols; j++)  {
+            ost << val << " ";
+        }
+        ost << endl;
+    }
+}

1sem/programming basics/z12/35.cpp

@@ -0,0 +1,46 @@
+// pb_z12_35.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <fstream>
+
+using namespace std;
+
+int **read_matrix(size_t nrows, size_t ncols);
+void fliplr(int **matrix, size_t nrows, size_t ncols, ostream &ost);
+
+int main() {
+    ofstream fout("out.txt", ios::trunc);
+    if (!fout.is_open())
+    {
+        cerr << "Unable to open file" << endl;
+        return 1;
+    }
+
+    size_t rows, cols;
+    cout << "rows, cols >>>";
+    cin >> rows >> cols;
+    int **matrix = read_matrix(rows, cols);
+    fliplr(matrix, rows, cols, fout);
+    return 0;
+}
+
+int **read_matrix(size_t nrows, size_t ncols) {
+    int **out = new int*[nrows];
+    for(size_t i = 0; i < nrows; i++) {
+        int *row = new int[ncols];
+        for(size_t j = 0; j < ncols; j++)  {
+            cin >> *(row + j);
+        }
+        *(out + i) = row;
+    }
+    return out;
+}
+
+void fliplr(int **matrix, size_t nrows, size_t ncols, ostream &ost) {
+    for(size_t i = 0; i < nrows; i++) {
+        for(size_t j = ncols; j > 0; j--)  {
+            ost << *(*(matrix + i) + j - 1) << " ";
+        }
+        ost << endl;
+    }
+}

1sem/programming basics/z12/36.cpp

@@ -0,0 +1,46 @@
+// pb_z12_36.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <fstream>
+
+using namespace std;
+
+int **read_matrix(size_t nrows, size_t ncols);
+void transpose(int **matrix, size_t size, ostream &ost);
+
+int main() {
+    ofstream fout("out.txt", ios::trunc);
+    if (!fout.is_open())
+    {
+        cerr << "Unable to open file" << endl;
+        return 1;
+    }
+
+    size_t size;
+    cout << "size >>>";
+    cin >> size;
+    int **matrix = read_matrix(size, size);
+    transpose(matrix, size, fout);
+    return 0;
+}
+
+int **read_matrix(size_t nrows, size_t ncols) {
+    int **out = new int*[nrows];
+    for(size_t i = 0; i < nrows; i++) {
+        int *row = new int[ncols];
+        for(size_t j = 0; j < ncols; j++)  {
+            cin >> *(row + j);
+        }
+        *(out + i) = row;
+    }
+    return out;
+}
+
+void transpose(int **matrix, size_t size, ostream &ost) {
+    for(size_t i = 0; i < size; i++) {
+        for(size_t j = 0; j < size; j++)  {
+            ost << *(*(matrix + j) + i) << " ";
+        }
+        ost << endl;
+    }
+}