Create a simple C application made of multiple source and header files.

Your application must contain at least these files:

- main.c

- math_utils.c

- math_utils.h

- message.c

- message.h

- Makefile

Requirements:

1. main.c should use functions declared in both math_utils.h and message.h.

2. math_utils.c should implement a very simple function such as add(int a, int b).

3. message.c should implement a very simple function such as printMessage().

4. Write a Makefile that builds the executable named app.

5. Use make to compile the program.

6. Run the program to show that it works.

7. Then modify one source file or one header file and run make again.

8. Show which files are recompiled.

Your submission must include screenshots from your Linux VM showing:

- the project files

- the Makefile

- the command make

- the program running successfully

- a file being modified

- the result of running make again

- your name visible in the screenshots

You may also paste your Makefile and source code in the answer box or upload them in a ZIP file.

When fopen() is not able to open a file, it returns

Which of the following true about FILE *fp

#include <stdio.h>
#define square(x) x*x
int main()
{
  int x;
  x = 36/square(6);
  printf("%d", x);
  return 0;
}

Output?

#include <stdio.h>
# define scanf  "%s Geeks Quiz "
int main()
{
   printf(scanf, scanf);
   return 0;
}

Predict the output of following program?

#include <stdio.h>
#define MAX 1000
int main()
{
   int MAX = 100;
   printf("%d ", MAX);
   return 0;
}

What is the output for the following code snippet?

#include <stdio.h>
#define A -B
#define B -C
#define C 5
int main()
{
  printf("The value of A is %d\\n", A); 
  return 0;
}

What is the output of the following C program?

#include <stdio.h>
#define SQR(x) (x*x)
int main()
{
    int a;
    int b=4;
    a=SQR(b+2);
    printf("%d\\n",a);
    return 0;
}

How do you allocate memory for a 2D array using pointers in C++?