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Objects and Classes
Which of the following statements is correct?
Data items in a class must be private.
Both data and functions can be either private or public.
Member functions of a class must be private.
Constructor of a class cannot be private.
Correct Answer:
Both data and functions can be either private or public.
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Which of the following statements is incorrect?
Constructor is executed when _____.
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Which of the following statement is correct about the program given below? #include
class CuriousTab { static int x; public: static void SetData(int xx) { this->x = xx; } static void Display() { cout<< x ; } }; int CuriousTab::x = 0; int main() { CuriousTab::SetData(22); CuriousTab::Display(); return 0; }
What will be the output of the following program? #include
class India { public: struct CuriousTab { int x; float y; void Function(void) { y = x = (x = 4*4); y = --y * y; } void Display() { cout<< y << endl; } }B; }I; int main() { I.B.Display(); return 0; }
What will be the output of the following program? #include
#include
class CuriousTab { int val; public: void SetValue(char *str1, char *str2) { val = strcspn(str1, str2); } void ShowValue() { cout<< val; } }; int main() { CuriousTab objCuriousTab; objCuriousTab.SetValue((char*)"India", (char*)"CuriousTab"); objCuriousTab.ShowValue(); return 0; }
What will be the output of the following program? #include
class Point { int x, y; public: Point(int xx = 10, int yy = 20) { x = xx; y = yy; } Point operator + (Point objPoint) { Point objTmp; objTmp.x = objPoint.x + this->x; objTmp.y = objPoint.y + this->y; return objTmp; } void Display(void) { cout<< x << " " << y; } }; int main() { Point objP1; Point objP2(1, 2); Point objP3 = objP1 + objP2; objP3.Display(); return 0; }
Which of the following statement is correct about the program given below? #include
class CuriousTabBase { int x, y; public: CuriousTabBase(int xx = 10, int yy = 10) { x = xx; y = yy; } void Show() { cout<< x * y << endl; } }; class CuriousTabDerived { private: CuriousTabBase objBase; public: CuriousTabDerived(int xx, int yy) : objBase(xx, yy) { objBase.Show(); } }; int main() { CuriousTabDerived objDev(10, 20); return 0; }
Which of the following statement is correct about the program given below? #include
#include
class CuriousTab { static int x; public: CuriousTab() { if(x == 1) exit(0); else x++; } void Display() { cout<< x << " "; } }; int CuriousTab::x = 0; int main() { CuriousTab objCuriousTab1; objCuriousTab1.Display(); CuriousTab objCuriousTab2; objCuriousTab2.Display(); return 0; }
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