Добавить task5.cpp

task1.cpp

@@ -1,21 +0,0 @@
-#include <iostream>
-#define SIZE 80
-using namespace std;
-
-int main()
-{
-    char str[SIZE];
-    cout << "Input string: ";
-    cin.getline(str, SIZE);
-
-    int i = 0;
-    while (str[i] != '\0') {
-        if (str[i] == ' ') {
-            str[i] = '\t';
-        }
-        ++i;
-    }
-
-    cout << "Modified string: " << str << endl;
-    system("pause");
-}

task2.cpp

@@ -1,53 +0,0 @@
-#pragma warning(disable : 4996)
-#define SIZE 80
-#include <iostream>
-using namespace std;
-
-int mystrlen(const char* str) {
-    int len = 0;
-    for (; str[len] != '\0'; ++len) {}
-    return len;
-}
-
-char* mystrcat(char* str1, const char* str2) {
-    int i = mystrlen(str1);
-    int j;
-    for (j = 0; str2[j] != '\0'; ++j) {
-        str1[i + j] = str2[j];
-    }
-    str1[i + j] = '\0';
-    return str1;
-}
-
-char* mystrchr(char* str, char s) {
-    for (int i = 0; str[i] != '\0'; ++i) {
-        if (str[i] == s) {
-            return &str[i];
-        }
-    }
-    return 0;
-}
-
-int main() {
-    char str1[SIZE];
-    char str2[SIZE];
-    cout << "Input first string: ";
-    cin.getline(str1, SIZE);
-    cout << "Input second string: ";
-    cin.getline(str2, SIZE);
-
-    cout << "mystrlen(str1): " << mystrlen(str1) << endl;
-    cout << "mystrcat(str1, str2): " << mystrcat(str1, str2) << endl;
-
-    char ch;
-    cout << "Input char to search in str1: ";
-    cin >> ch;
-    char* f = mystrchr(str1, ch);
-    if (f) {
-        cout << "mystrchr(str1, '" << ch << "): " << f << endl;
-    }
-    else {
-        cout << "mystrchr(str1, '" << ch << "): 0" << endl;
-    }
-    system("pause");
-}

task4.cpp

@@ -1,53 +1,34 @@
-#pragma warning(disable : 4996)
-#define SIZE 80
 #include <iostream>
 using namespace std;
 
-int mystrlen(const char* str) {
-    int len = 0;
-    for (; str[len] != '\0'; ++len) {}
-    return len;
-}
-
-char* mystrcat(char* str1, const char* str2) {
-    int i = mystrlen(str1);
-    int j = mystrlen(str2);
-    for (int k = 0; k < j; ++k) {
-        str1[i + k] = str2[k];
-    }
-    str1[i + j] = '\0';
-    return str1;
-}
-
-char* mystrchr(char* str, char s) {
-    for (int i = 0; str[i] != '\0'; ++i) {
-        if (str[i] == s) {
-            return &str[i];
-        }
-    }
-    return 0;
+int* removeNeg(int* a, int n, int& newN) {
+    int* b = new int[n];
+    int k = 0;
+    for (int i = 0; i < n; i++)
+        if (a[i] >= 0) b[k++] = a[i];
+    newN = k;
+    int* c = new int[k];
+    for (int i = 0; i < k; i++) c[i] = b[i];
+    delete[] b;
+    return c;
 }
 
 int main() {
-    char str1[SIZE];
-    char str2[SIZE];
-    cout << "Input first string: ";
-    cin.getline(str1, SIZE);
-    cout << "Input second string: ";
-    cin.getline(str2, SIZE);
-
-    cout << "mystrlen(str1): " << mystrlen(str1) << endl;
-    cout << "mystrcat(str1, str2): " << mystrcat(str1, str2) << endl;
-
-    char ch;
-    cout << "Input char to search in str1: ";
-    cin >> ch;
-    char* f = mystrchr(str1, ch);
-    if (f) {
-        cout << "mystrchr(str1, '" << ch << "'): " << f << endl;
+    srand(time(0));
+    int n = 10;
+    int* a = new int[n];
+    for (int i = 0; i < n; i++) {
+        a[i] = rand() % 21 - 10;
+        cout << a[i] << " ";
     }
-    else {
-        cout << "mystrchr(str1, '" << ch << "'): 0" << endl;
-    }
-    system("pause");
-}
+    cout << endl;
+    int newN;
+    int* b = removeNeg(a, n, newN);
+    cout << "New array: ";
+    for (int i = 0; i < newN; i++)
+        cout << b[i] << " ";
+    cout << endl;
+    delete[] a;
+    delete[] b;
+    return 0;
+} 

task5.cpp

@@ -0,0 +1,52 @@
+#include <iostream>
+using namespace std;
+
+void addBlock(int*& a, int& n, const int* b, int m) {
+    int* temp = new int[n + m];
+
+    for (int i = 0; i < n; i++) {
+        temp[i] = a[i];
+    }
+
+    for (int i = 0; i < m; i++) {
+        temp[n + i] = b[i];
+    }
+
+    delete[] a;
+
+    a = temp;
+
+    n = n + m;
+}
+
+int main() {
+    srand(time(0));
+
+    int n = 7, m = 4;
+    int* a = new int[n];
+    int* b = new int[m];
+
+    cout << "A: ";
+    for (int i = 0; i < n; i++) {
+        a[i] = rand() % 30;
+        cout << a[i] << (i < n - 1 ? " " : "");
+    }
+
+    cout << endl << "B: ";
+    for (int i = 0; i < m; i++) {
+        b[i] = rand() % 30;
+        cout << b[i] << (i < m - 1 ? " " : "");
+    }
+
+    addBlock(a, n, b, m);
+
+    cout << endl << "Result: ";
+    for (int i = 0; i < n; i++) {
+        cout << a[i] << (i < n - 1 ? " " : "");
+    }
+    cout << endl;
+
+    delete[] a;
+    delete[] b;
+    return 0;
+}