C++ examples for Data Type:char array
Member function converts String objects to upper case
#include <iostream> #include <cstring> //for strcpy(), etc #include <cctype> //for toupper() using namespace std; class String //user-defined string type { private://from w ww. ja v a 2 s .com char* str; //pointer to string public: String(char* s) //constructor, one arg { int length = strlen(s); //length of string argument str = new char[length+1]; //get memory strcpy(str, s); //copy argument to it } ~String() //destructor { delete str; } void display() //display the String { cout << str; } void upit(); //uppercase the String }; void String::upit() //uppercase each character { char* ptrch = str; //pointer to this string while( *ptrch ) //until null, { *ptrch = toupper(*ptrch); //uppercase each character ptrch++; //move to next character } } int main() { String s1 = "He who laughs last laughs best."; cout << "\ns1="; //display string s1.display(); s1.upit(); //uppercase string cout << "\ns1="; //display string s1.display(); cout << endl; return 0; }