Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Concept explainers

Concept of Pointer Parameter
Pointers are the special variable that stores the variable address, instead of storing the variable value. Pointer is a powerful feature of a programming language. A pointer is mostly used to save memory space and improve execution time.
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What is output of the following program? #include <iostream> using namespace std; int x = 19; int main() { } int x = 21; { int x = 41; cout <<::X<<x<<::x<<"\n"; } return 0; a. 414141 b. 194121 c. 214121 d. 194119
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Transcribed Image Text:What is output of the following program? #include <iostream> using namespace std; int x = 19; int main() { } int x = 21; { int x = 41; cout <<::X<<x<<::x<<"\n"; } return 0; a. 414141 b. 194121 c. 214121 d. 194119
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