cviceni 3

cviceni/3_c/priklad1.cpp

+#include <vector>
+#include <iostream>
+#include <algorithm>
+
+int main()
+{
+    // neinicializovaný vektor cisel typu int, nulové velikosti
+    std::vector<int> a;
+
+    std::cout << "velikost a je " << a.size() << std::endl;
+
+    a.push_back(10);
+
+    std::cout << "velikost a je " << a.size() << std::endl;
+
+    a.resize(10);
+
+    for (int i = 0; i < a.size(); i++)
+    {
+        std::cout << a[i] << " ";
+    }
+    std::cout << std::endl;
+
+    // std::vector<int>::iterator i;
+    for (auto i = a.begin(); i != a.end(); i++)
+    {
+        std::cout << *i << " ";
+    }
+    std::cout << std::endl;
+
+    for (int x : a)
+        std::cout << x << " ";
+
+    std::cout << std::endl;
+
+    for (int &x : a)
+        x = 5;
+
+    for (const int &x : a)
+        std::cout << x << " ";
+    std::cout << std::endl;
+
+    int b[] = {1, 2, 3, 4};
+    int *pb = &b[1];
+    // pb+1 ukazatel
+    std::cout << *(pb + 1) << std::endl;
+
+    int &rb = b[1];
+    std::cout << rb + 10 << std::endl;
+
+    for (auto i = a.begin(); i != a.end() + 1; i++)
+    {
+        std::cout << *i << " ";
+    }
+    std::cout << std::endl;
+
+    try
+    {
+        for (int i = 0; i < a.size(); i++)
+        {
+            std::cout << a[i] << "/" << a.at(i) << " ";
+        }
+        throw 1;
+        std::cout << std::endl;
+    }
+    catch (std::out_of_range &e)
+    {
+        std::cerr << "chyba: " << e.what() << std::endl;
+    }
+    catch (int e)
+    {
+        std::cerr << "\n chyba" << e << std::endl;
+    }
+
+    std::vector<int> z{10, 11, 9, 8, 65, 3, 100};
+    for (int &x : z)
+        std::cout << x << " ";
+
+    std::cout << std::endl;
+
+    std::sort(z.begin(), z.end(), [](int a, int b)
+              { return a > b; });
+    for (int &x : z)
+        std::cout << x << " ";
+
+    std::cout << std::endl;
+
+    std::vector<int> zz(z.size());
+    std::copy_if(z.begin(), z.end(), zz.begin(), [](int a)
+                 {if(a>10) return a; else return 0; });
+    for (int &x : zz)
+        std::cout << x << " ";
+
+    std::cout << std::endl;
+}
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