http://wiki.borovicka.name/ 2026-04-30T13:15:05+02:00 http://wiki.borovicka.name/ http://wiki.borovicka.name/lib/tpl/artic/images/favicon.ico text/html 2018-06-21T19:48:00+02:00 http://wiki.borovicka.name/programming/c-cpp/cfilemanipulation?rev=1529603280&do=diff C File manipulation Open file for read FILE *file; file = fopen(argv[1],"r"); if(file==NULL) { printf("Cannot open file %s!\n",argv[1]); return (EXIT_FAILURE); } fclose (file); Read to end of file text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/chartoint?rev=1529603281&do=diff Char to int First possibility char c; //some input to c int number; number = c -'0'; Second possibility char c[2]; c[1]=0; //some input to c number = atoi(c); text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/determinant?rev=1529603281&do=diff Matrix determinant /* * File: vypocetDeterminantu.cpp * Author: borovec * * Created on 8. listopad 2008, 10:41 */ #include <sstream> #include <iostream> #include <iomanip> #include <string> #include <cmath> using namespace std; bool readLine(string line, double * array, const int cols ){ int i = 0; double a; istringstream iss (line); while(1) { if(i > cols) return(false); iss >> a; if(iss.fail()) return (false); arr… text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/linearequations?rev=1529603281&do=diff Linear equations /* * File: linrce.cpp * Author: borovec * * Created on 18. listopad 2008, 10:26 */ #include <sstream> #include <iostream> #include <iomanip> #include <string> #include <cmath> using namespace std; bool readLine(string line, double * array, const int cols ){ int i = 0; double a; istringstream iss (line); while(1) { if(i >= cols) return(false); iss >> a; if(iss.fail()) return (false); array[i]=a; if(iss.e… text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/matrix?rev=1529603281&do=diff Matrix Work with matrices. Read matrix static int** readMatrix2D(istream &is, int w, int h ) { int i, j; int ** matrix; matrix = new int * [h]; for ( i = 0; i < h; i ++ ) { matrix[i] = new int [w]; for ( j =0; j < w; j ++ ) { cin >> matrix[i][j]; } } return ( matrix ); } text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/openfile?rev=1529603281&do=diff Open file static ifstream& openFileForRead(string fileName) { ifstream inFile; inFile . open ( fileName.c_str(), std::ifstream::in ); if ( !inFile.good () ) { fprintf(stderr,"Couldn't open file '%s'...\n",fileName.c_str()); inFile.close(); return inFile; } return inFile; } text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/smaartpointer?rev=1529603281&do=diff Smart pointer Description Smart pointer is an abstract data type, that extend functionality for standard c++ pointers. The most import features are automatic lifetime and references management of the wrapped objects. Smart pointer automatically deletes non-referenced objects and fulfills the role of garbage collector. This is very useful for reduce memmory leaks and related bugs. text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/staticmatrixfunctionparameter?rev=1529603281&do=diff Statická matice jako parametr funkce void function_with_reference_parameter(int (&matrix)[8][8]) { /* some code */ } void function_with_pointer_parameter(int (*matrix)[8][8]) { /* some code */ } int main(int argc, char** argv) { int matrix[8][8]; function_with_reference_parameter(matrix); function_with_pointer_parameter(&matrix); } text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/strdiff?rev=1529603281&do=diff String diff /* * File: diff.cpp * Author: borovec * * Created on 18. listopad 2008, 16:29 */ #include <iostream> using namespace std; bool diff ( const char * s1, const char * s2, bool cs ){ while(*s1!='\0' || *s2!='\0'){ if(isspace(*s1)){ s1++; continue; } if(isspace(*s2)){ s2++; continue; } if(cs){ if(*s1!=*s2) return false; }else { if(*s1!=*s2 && toup… text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/strsubstr?rev=1529603281&do=diff StrSubstr /* * File: strSubst.cpp * Author: borovec * * Created on 18. listopad 2008, 17:49 */ #include <iostream> using namespace std; bool isSearchStr(const char * Where, const char * Search){ if(strlen(Search)==0) return (false); while(*Search!='\0'){ if(*Search!=*Where) return (false); Where++; Search++; } return (true); } char * reallocArray(char * array, int &len, int newlen){ char * newArray = new char[newlen]; … text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/strtoint?rev=1529603281&do=diff String to integer & integer to string String to integer int str2int (const std::string &str) { std::stringstream ss(str); int n; ss >> n; return n; } Integer to string string int2str (int n) { std::stringstream ss; ss << n; return ss.str(); } text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/testing?rev=1529603281&do=diff Page for testing text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/trimstring?rev=1529603281&do=diff Trim string string trim ( const string & s ){ const char* p = &s[0]; const char* p2 = p + s.size(); while ( *p == ' ' ) p++; while ( p2 > p && p2[-1] == ' ' ) p2--; return string ( p, p2-p ); } text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/utf8strlen?rev=1529603281&do=diff UTF8 strlen /* * File: utf8strlen.cpp * Author: borovec * * Created on 18. listopad 2008, 16:18 */ #include <iostream> #include <iomanip> using namespace std; /* *Zakázané hodnoty: * hodnoty větší než 0x10ffff, * hodnoty mezi 0xd800 až 0xdfff včetně, * hodnoty mezi 0xfdd0 až 0xfdef včetně, * BOM hodnoty 0xfffe a 0xffff. */ int UTF8_strlen ( const char * str ) { int zbyva = strlen(str); int words = 0; unsigned char C; unsigned int utf = 0; while… text/html 2018-06-21T19:48:01+02:00 http://wiki.borovicka.name/programming/c-cpp/wc?rev=1529603281&do=diff wc #include <iostream> #include <iomanip> #include <fstream> #include <cctype> using namespace std; int main( int argc, char * argv [] ) { ifstream in; int ch, words = 0, lines = 0, chars = 0, inWord = 0; if ( argc != 2 ) { cout << "wc <file>" << endl; return ( 1 ); } in . open ( argv[1], ios::in ); if ( ! in . good () ) { cout << "Chyba cteni " << argv[1] << endl; return ( 1 ); } while ( 1 ) { ch = …