string

base/CMakeLists.txt

@@ -78,4 +78,5 @@ add_executable(newexcp exception/newexcp.cpp)
 add_executable(use_sales exception/use_sales.cpp)
 add_executable(rtti1 exception/rtti1.cpp)
 add_executable(rtti2 exception/rtti2.cpp)
-add_executable(constcast exception/constcast.cpp)
+add_executable(constcast exception/constcast.cpp)
+add_executable(str1 string/str1.cpp)

base/string/str1.cpp

@@ -0,0 +1,35 @@
+//
+// Created by nicemoe on 2021/9/16.
+//
+
+#include  <iostream>
+#include<string>
+
+using namespace std;
+
+int main() {
+
+    string one("Lottery Winner!");
+    cout << one << endl;
+    string two(20, '$');
+    cout << two << endl;
+    string three(one);
+    cout << three << endl;
+    one += " Oops!";
+    cout << one << endl;
+    two = "Sorry!That was ";
+    three[0] = 'P';
+    string four;
+    four = two + three;
+    cout << four << endl;
+    char alls[] = "All's well that ends well";
+    string five(alls, 20);
+    cout << five << ", ";
+    string six(alls + 6, alls + 10);
+    cout << six << ", ";
+    string seven(&five[6], &five[10]);
+    cout << seven << "...\n";
+    string eight(four, 7, 16);
+    cout << eight << " in motion!" << endl;
+    return 0;
+}