Update 动态数组.cpp

practical_exercises/key_exercises/动态数组.cpp

@@ -1,5 +1,14 @@
 #include<iostream>
-char *sPtr;        		//<2F><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>       
+#include<cstring>
-s="<EFBFBD><EFBFBD><EFBFBD><EFBFBD>"      
+
-sPtr = new char[strlen(s)+1];
+
-strncpy(sPtr,s;  
+int main() {
+  
+  char *sPtr;        	 
+  const char* s="hello";
+  sPtr = new char[strlen(s)+1];
+  strncpy(sPtr,s,strlen(s)); 
+  std::cout << sPtr << std::endl;
+  delete sPtr;
+  return  0;
+}