Linking multiple files in C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to include the header file utils.h in main.c.

C

#include [1]

int main() {
    print_message();
    return 0;
}

Drag options to blanks, or click blank then click option'

A"utils.h"

B<utils.h>

C"utils.c"

D<stdio.h>

Attempts:

3 left

💡 Hint

Common Mistakes

Using angle brackets instead of double quotes for user headers.

Including the source file instead of the header file.

To include your own header file, use double quotes like "utils.h".

2fill in blank

medium

Complete the code to declare the function print_message in utils.h.

C

void [1]();

Drag options to blanks, or click blank then click option'

AprintMessage

Bprint

Cmessage_print

Dprint_message

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name than the one defined.

Misspelling the function name.

The function name must match exactly the one defined in the source file, which is print_message.

3fill in blank

hard

Fix the error in the function definition in utils.c by completing the function name.

C

void [1]() {
    printf("Hello from utils!\n");
}

Drag options to blanks, or click blank then click option'

Aprint_message

Bmessage_print

Cprint

DprintMessage

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name in the definition.

Incorrect capitalization in the function name.

The function definition must use the exact name print_message to match the declaration and usage.

4fill in blank

hard

Fill both blanks to complete the Makefile rule to compile main.o from main.c.

C

main.o: [1] utils.h
	[2] -c main.c

Drag options to blanks, or click blank then click option'

Amain.c

Bgcc

Cclang

Dmain.h

Attempts:

3 left

💡 Hint

Common Mistakes

Using the header file as the source dependency.

Using the wrong compiler command.

The source file main.c is the dependency, and gcc is the compiler command.

5fill in blank

hard

Fill all three blanks to complete the Makefile rule to link main.o and utils.o into the executable app.

C

app: main.o utils.o
	[1] [2] [3] -o app

Drag options to blanks, or click blank then click option'

Agcc

Bmain.o

Cutils.o

Dclang

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to include all object files.

Using the wrong compiler command for linking.

Use gcc to link object files main.o and utils.o into the executable app.