Добрый вечОр !!!
Возникла проблема при компиляции исходник в code::block (в Dev++ работает без ошибок проверял)
пишет что strerror не был объявлен в этой области.
И предупреждение "неиспользуемые переменные argv argc". (if 4) есть скрин.
source :
| C++ |
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| #include <iostream>
#include <stdlib.h>
#include <string>
#include <fstream>
#include <ctime>
#include <sys/types.h>
#include <sys/stat.h>
#include <cerrno>
using namespace std;
int main () {
/* Display the title of the program */
cout<<"\n\n";
cout<<" FILE MANIPULATION\n";
cout<<" \n ";
cout<<" \n ";
cout<<" ";
system("pause");
system("cls");
/* Display the MENU */
string option;
menu:
cout << endl;
cout << " =====================================" << endl;
cout << " || WELCOME TO THE PROGRAM ||" << endl;
cout << " =====================================" << endl;
cout << " || 1 - Save to a file ||" << endl;
cout << " || 2 - View file content ||" << endl;
cout << " || 3 - Obtain file size ||" << endl;
cout << " || 4 - File Detail ||" << endl;
cout << " || 5 - Clear the file ||" << endl;
cout << " || 6 - Delete the file ||" << endl;
cout << " || 7 - Exit the Program ||" << endl;
cout << " =====================================" << endl;
cout << "\n Enter Your Choice: ";
getline(cin,option); //getline ñ÷èòûâàåò ñèìâîëû èõ âõîäíîãî ïîòîêà è ïîìåùàåò èõ â ñòðîêó
if (option == "1") {
system("cls");
string textToSave;
cout << " ========================================" << endl;
cout << " || ENTER THE STRING YOU WANT TO SAVE ||\n" ; //save a string
cout << " ========================================\n\n" << endl;
cout << " HERE: ";
getline(cin,textToSave);
ofstream saveFile ("file.txt");
saveFile << textToSave;
cout << "" << endl<< endl<< endl<< endl<< endl<< endl;
saveFile.close();
system("pause");
system("cls");
goto menu;
}
if(option == "2"){
system("cls");
ifstream loadFile;
loadFile.open ("file.txt", ifstream::in); //View file content ::in îòêðûò äëÿ ÷òåíèÿ
cout << " ========================================" << endl;
cout << " || THE FILE CONTAINS THE STRING ||\n" ;
cout << " ========================================\n\n" << endl;
cout << " ";
while (loadFile.good()){ // while-öèêë .good() - âîçâðàùàåò true åñëè ââîä-âûâîä çàâåðø.óñïåøíî
cout << (char) loadFile.get(); // cout <<(char) loadFie.get(); ò.å ïîñëåäîâàòåëüíî ñ÷èòûâàòü ñèìâîëû èç ôàéëà
}
cout << "" << endl<< endl<< endl<< endl<< endl<< endl;
loadFile.close();
system("pause");
system("cls");
goto menu;
}
if (option == "3") {
system("cls");
streampos begin,end; // íà÷àëî è êîíåö ïîòîêà
ifstream myfile ("file.txt", ios::binary); //Obtain file size ïðåäñòàâëåíèå ôàéëà â áèíàðíîì êîäà (äâîè÷íîì) ios::binary
begin = myfile.tellg(); // beg - íà÷.ïîòîêà tellg - ìåñòî íàõîæäåíèÿ | (êóðñîðà) â êîíöå ïîñëåä.ñòðîêè
myfile.seekg (0, ios::end); // seekg - ïåðåìåùåíèå | (êóðñîðà) â íà÷àëî ò.å 0
end = myfile.tellg(); // end - êîíåö ïîòîêà êóðñîð íàõîäèòñÿ â íà÷àëå
myfile.close(); // close() çàêðûòèå ôàéëà
cout << " ========================================" << endl;
cout << " || THE FILE SIZE IS ||\n" ;
cout << " ========================================\n\n" << endl;
cout << "\n\n\n\t\t\t";
cout << (end-begin) << " bytes.\n"; // end-begin îò êîí÷à äî íà÷àëà ïîòîêà ñ÷èòûâàòü êîë-âî ñèìâîëîâ è âûâåñòè â áèòàõ
cout << "" << endl<< endl<< endl<< endl<< endl;
system("pause");
system("cls");
goto menu;
}
if (option == "4") {
system("cls");
int argc;
char** argv ;
struct stat fileInfo;
if (stat("file.txt", &fileInfo) != 0) { // Use stat( ) to get the info ñòàòóñ ôàéëà è ñòðóêòóðû fileInfo íå äîëæî áûòü = 0 èíà÷å îøèáêà
cout << "\n\n\n\n\n\n\n";
cout << " ==================" << endl;
cout << " || ERROR ||\n" ;
cout << " ==================\n\n" << endl;
cout << " ";
std::cerr << strerror(errno) << '\n';
cout << "\n\n\n\n\n\n\n";
return 0;
}
cout << " =====================================================" << endl;
cout << " || Size : " << fileInfo.st_size <<" bytes"<<'\n'; // Size in bytes ðàçìåð â áàéòàõ
cout << " || Drive letter saved : " << (char)(fileInfo.st_dev + 'A') << '\n'; // Device number èíäåíòèôèêàòîð óñòðîéñòâà ò.å äèñê
cout << " || Created : " << std::ctime(&fileInfo.st_ctime); // Creation time âðåìÿ ïîñë.èçì ñòàòóñà
cout << " || Modified : " << std::ctime(&fileInfo.st_mtime); // Last mod time âðåìÿ ïîñë.ìîä ñòàòóñà
cout << " =====================================================" << endl;
cout << "\n\n\n";
system("pause");
system("cls");
goto menu;
}
if (option == "5") {
system("cls");
std::ofstream ofs ("file.txt", std::ios::out | std::ios::trunc); //î÷ñòèòü ôàéë ios:: out - îòêðûòü äëÿ îïåðàöèé âûâîäà .
cout << "\n\n\n\n"; //trunc - åñëè ôàéë îòêðûò äëÿ îïåðàöèé âûâîäà è óæå ñóùåñòâóåò,åãî ïðåäûäóùèé
cout << " ========================================" << endl; // êîíòåíò óäàëÿåòñÿ è çàìåíÿåòñÿ íîâûì
cout << " || FILE CLEARED ||\n" ;
cout << " ========================================\n\n" << endl;
system("pause");
system("cls");
goto menu;
}
if (option == "6") {
system("cls");
std::remove("file.txt"); //Delete the file
cout << "\n\n\n\n";
cout << " ========================================" << endl;
cout << " || FILE SUCCESSFULLY REMOVED ||\n" ;
cout << " ========================================\n\n" << endl;
system("pause");
system("cls");
goto menu;
}
if (option == "7") {
system("cls");
cout<<"EXIT\n";
system("pause");
return 0;
}
else;
system("cls");
cout<<"\n\n\n\n\n\n";
cout<<"\t\t\t[][][] [][][] [][][] [][][] [][][]\n";
cout<<"\t\t\t[] [] [] [] [] [] [] [] []\n";
cout<<"\t\t\t[][][] [][][] [][][] [] [] [][][]\n";
cout<<"\t\t\t[] [] [] [] [] [] [] [] []\n";
cout<<"\t\t\t[][][] [] [] [] [] [][][] [] []\n\n";
cout<<"\t\t\tPlease input a valid number.\n";
cout<<"\t\t\tPress any key to go back to the Menu.\n\n\n\n\n\n\n";
system("pause");
system("cls");
goto menu;
system("pause");
return 0;
} |
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Сообщение от -Lit-
