int): Call print_stack(). Define a local string containing "ABCD". Call f2() passing the string variable as its parameter. f2(char *): Call print_stack(). Furthermore, define a macro OFFSET=32 in this unit and use that macro in place of the offset parameter whenever you call print_stack(). This helps you test your code using different offsets without having to change it throughout your code. Make sure the code compiles a

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
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C Programming

In this unit, you will create 3 functions:

  • main(): Call print_stack() and then call f1(10).
  • f1(unsigned int): Call print_stack(). Define a local string containing "ABCD". Call f2() passing the string variable as its parameter.
  • f2(char *): Call print_stack().

Furthermore, define a macro OFFSET=32 in this unit and use that macro in place of the offset parameter whenever you call print_stack(). This helps you test your code using different offsets without having to change it throughout your code.

Make sure the code compiles and there must be no errors. I want to see the full output in the terminal running, so I know that the code compiles. 

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There is an error on line 12. I need that error to be fixed. You can see that error on the image attached. 

### C Programming: Basic Stack Operations

#### Source Code

The following code snippet demonstrates basic stack operations using a C program:

```c
#include<stdio.h>
#include<stdlib.h>
#define OFFSET 32

int Top=-1, inp_array[OFFSET];
void push();
void pop();
void print_stack();

int main() {
    int choice;
    while(true) {
        printf("\nOperations performed by Stack");
        printf("\n1.push the element\n2.pop the element\n3.Display Stack\n4.End");
        printf("\nInput the choice:");
        scanf("%d",&choice);

        switch(choice) {
            case 1: push();
                break;
            case 2: pop();
                break;
            case 3: print_stack();
                break;
            case 4: exit(0);
            default: printf("\nInvalid choice!!!");
        }
    }
}
```

#### Explanation and Error

- **Header Files and Constants**: Includes the standard input-output and standard library header files. Defines a constant `OFFSET` with a value of 32.

- **Global Variables**: Declares an integer `Top` initialized to -1 and an integer array `inp_array` sized by `OFFSET`.

- **Function Declarations**: 
  - `push()`: To add elements to the stack.
  - `pop()`: To remove elements from the stack.
  - `print_stack()`: To display elements in the stack.

- **Main Function**: 
  - Uses a `while` loop to continually perform stack operations based on user input.
  - Prompts the user for a choice and executes corresponding functions.

- **Error Notice**: The code contains an error due to the use of `true` without declaration. C does not inherently recognize `true`. To resolve this, replace `while(true)` with `while(1)` for infinite loop functionality.

#### Compiler Output

On the right, the panel shows the compiler output:

- An error indicating `'true' undeclared` in the main function at line 12. 
- Suggests declaring the identifier or using a valid alternative.

By correcting the undeclared identifier, the program can compile and execute without this specific error. Remember that C requires explicit declarations and does not implicitly recognize boolean values such as `true` or `false`.
Transcribed Image Text:### C Programming: Basic Stack Operations #### Source Code The following code snippet demonstrates basic stack operations using a C program: ```c #include<stdio.h> #include<stdlib.h> #define OFFSET 32 int Top=-1, inp_array[OFFSET]; void push(); void pop(); void print_stack(); int main() { int choice; while(true) { printf("\nOperations performed by Stack"); printf("\n1.push the element\n2.pop the element\n3.Display Stack\n4.End"); printf("\nInput the choice:"); scanf("%d",&choice); switch(choice) { case 1: push(); break; case 2: pop(); break; case 3: print_stack(); break; case 4: exit(0); default: printf("\nInvalid choice!!!"); } } } ``` #### Explanation and Error - **Header Files and Constants**: Includes the standard input-output and standard library header files. Defines a constant `OFFSET` with a value of 32. - **Global Variables**: Declares an integer `Top` initialized to -1 and an integer array `inp_array` sized by `OFFSET`. - **Function Declarations**: - `push()`: To add elements to the stack. - `pop()`: To remove elements from the stack. - `print_stack()`: To display elements in the stack. - **Main Function**: - Uses a `while` loop to continually perform stack operations based on user input. - Prompts the user for a choice and executes corresponding functions. - **Error Notice**: The code contains an error due to the use of `true` without declaration. C does not inherently recognize `true`. To resolve this, replace `while(true)` with `while(1)` for infinite loop functionality. #### Compiler Output On the right, the panel shows the compiler output: - An error indicating `'true' undeclared` in the main function at line 12. - Suggests declaring the identifier or using a valid alternative. By correcting the undeclared identifier, the program can compile and execute without this specific error. Remember that C requires explicit declarations and does not implicitly recognize boolean values such as `true` or `false`.
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