/* push.h implementation * 2017-09-29: Bob Plantz 8/ of push operation in C The stack and stack pointer are global variables. They * are accessible to all functions in the program. 3/ extern int *stackPointer; /* push operation: * Address in stackPointer is decremented by size * of int. dataValue is stored at this address, which * is now the top of the stack. *1 #ifndef PUSH_H #define PUSH_H void push(int dataValue); #endif

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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 Explain what this program does in English.  How does this demonstrate how the Stack works? 

/* push.h
* implementation of push operation in C
* 2017-09-29: Bob Plantz
8/
/* The stack and stack pointer are global variables. They
* are accessible to all functions in the program.
31
extern int *stackPointer;
/* push operation:
* Address in stackPointer is decremented by size
* of int. dataValue is stored at this address, which
* is now the top of the stack.
$/
#ifndef PUSH_H
#define PUSH_H
void push(int dataValue);
#endif
Transcribed Image Text:/* push.h * implementation of push operation in C * 2017-09-29: Bob Plantz 8/ /* The stack and stack pointer are global variables. They * are accessible to all functions in the program. 31 extern int *stackPointer; /* push operation: * Address in stackPointer is decremented by size * of int. dataValue is stored at this address, which * is now the top of the stack. $/ #ifndef PUSH_H #define PUSH_H void push(int dataValue); #endif
/* pop.h
pop stack operation in C
* 2017-09-29: Bob Plantz
3/
/* The stack and stack pointer are global variables. They
* are accessible to all functions in the program.
*/
extern int *stackPointer;
/* pop operation:
* Copies int at current location of stack pointer
* to *dataLocation; address in stackPointer is
incremented by size of int.
*/
#ifndef POP_H
#define POP_H
void pop(int *dataLocation);
#endif
Transcribed Image Text:/* pop.h pop stack operation in C * 2017-09-29: Bob Plantz 3/ /* The stack and stack pointer are global variables. They * are accessible to all functions in the program. */ extern int *stackPointer; /* pop operation: * Copies int at current location of stack pointer * to *dataLocation; address in stackPointer is incremented by size of int. */ #ifndef POP_H #define POP_H void pop(int *dataLocation); #endif
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