FredGrit

2021年12月26日

摘要： #include <iostream> #include <uuid/uuid.h> #include <ctime> #include <string> #include <sstream> #include <unistd.h> #include <fstream> #include <pthr 阅读全文

posted @ 2021-12-26 19:22 FredGrit 阅读(45) 评论(0) 推荐(0)

C++ priority_queue sort elements descendingly

摘要： #include <iostream> #include <uuid/uuid.h> #include <ctime> #include <string> #include <sstream> #include <unistd.h> #include <fstream> #include <pthr 阅读全文

posted @ 2021-12-26 19:05 FredGrit 阅读(45) 评论(0) 推荐(0)

C++ multithread via pthread

摘要： #include <iostream> #include <uuid/uuid.h> #include <ctime> #include <string> #include <sstream> #include <unistd.h> #include <fstream> #include <pthr 阅读全文

posted @ 2021-12-26 18:24 FredGrit 阅读(44) 评论(0) 推荐(0)

C++ pass function as argument with parameter

摘要： #include <iostream> #include <uuid/uuid.h> #include <ctime> #include <string> #include <sstream> #include <unistd.h> #include <fstream> using namespac 阅读全文

posted @ 2021-12-26 14:06 FredGrit 阅读(49) 评论(0) 推荐(0)

2021年12月25日

write content to file via ofstream and read from file via ifstream

摘要： #include <iostream> #include <uuid/uuid.h> #include <ctime> #include <unistd.h> #include <string.h> #include <ostream> #include <fstream> #include <ss 阅读全文

posted @ 2021-12-25 23:14 FredGrit 阅读(43) 评论(0) 推荐(0)

C++ vector,map,queue,stack,list,forward_list,array

摘要： 1.The common function #include <iostream> #include <uuid/uuid.h> #include <ctime> #include <unistd.h> #include <string.h> #include <ostream> #include 阅读全文

posted @ 2021-12-25 23:09 FredGrit 阅读(36) 评论(0) 推荐(0)

2021年12月24日

C++ ofstream write content to file.ifstream read content from file

摘要： #include <iostream>#include <fstream>#include <uuid/uuid.h>#include <ctime>#include <unistd.h>#include <sstream> static char *uuidValue = (char *)mall 阅读全文

posted @ 2021-12-24 17:31 FredGrit 阅读(46) 评论(0) 推荐(0)

c++ get file size via ifstream and set mode as ios::ate

摘要： void getSize21() { ifstream wFile; wFile.open("log3.txt",ios::ate); if(!wFile.is_open()) { cout<<"Open log3.txt failed!"<<endl; } streampos size; size 阅读全文

posted @ 2021-12-24 16:38 FredGrit 阅读(61) 评论(0) 推荐(0)

C++ detect valid character and cout valid character via isalpha(ch) method

摘要： void getchar14() { char ch; while (1) { ch = getchar(); if(isalpha(ch)) { cout << "ch=" << ch << endl; } } } 阅读全文

posted @ 2021-12-24 15:41 FredGrit 阅读(31) 评论(0) 推荐(0)

2021年12月23日

C++ valgrind detect memory leak

摘要： 1.Install valgrind in ubuntu sudo apt-get install valgrind 2.Write the code in cpp for demonstration.Ignore the free allocated memory on purpose. #inc 阅读全文

posted @ 2021-12-23 11:02 FredGrit 阅读(126) 评论(0) 推荐(0)

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