0x03. C - Debugging

Tasks

0. Multiple mains

In most projects, we often give you only one main file to test with. For example, this main file is a test for a postitive_or_negative() function similar to the one you worked with in an earlier C project: (task 0)

carrie@ubuntu:/debugging$ cat main.c #include "main.h" /** * main - tests function that prints if integer is positive or negative * Return: 0 */ int main(void) { int i; i = 98; positive_or_negative(i); return (0); } carrie@ubuntu:/debugging$

carrie@ubuntu:/debugging$ cat main.h #ifndef MAIN_H #define MAIN_H #include <stdio.h> void positive_or_negative(int i); #endif /* MAIN_H */ carrie@ubuntu:/debugging$

carrie@ubuntu:/debugging$ gcc -Wall -pedantic -Werror -Wextra -std=gnu89 positive_or_negative.c main.c carrie@ubuntu:/debugging$ ./a.out 98 is positive carrie@ubuntu:/debugging$

Based on main.c file above, create a file named 0-main.c. This file must test that the function positive_or_negative() give the correct output when given a case of 0

You are not coding the solution of function, you are just testing it! However, you can adapt your function from 0x01-C-Variables, if, else, while - Task #0 to compile with this main file to test locally

• You need to upload 0-main.c and main.h for this task. We eill provide our own positive_or_negative() function

• You are not allowed to add or remove lines of code, you may change only one line in this task

carrie@ubuntu:/debugging$ gcc -Wall -pedantic -Werror -Wextra -std=gnu89 positive_or_negative.c 0-main.c -o 0-main carrie@ubuntu:/debugging$ ./0-main 0 is zero carrie@ubuntu:/debugging$ wc -l 0-main.c 16 1-main.c carrie@ubuntu:/debugging$

Repo:

• GitHub repository: alx-low_level_programming

• Directory: 0x03-debugging

• File: 0-main.c, main.h

1. Like, comment, subscribe

Copy this main file. Comment out (don't delete it!) the part of the code that is causing the output to go into an infinite loop.

• Don't add or remove any lines of code, as we will be checking your line count. You are only allowed to comment out existing code

• You donot have to compile with -Wall -Werror - Wextra -pedantic for this task

#include <stdio.h> /** * main - causes an infinite loop * Return: 0 */ int main(void) { int i; printf("Infinite loop incoming :(\n"); i = 0; while (i < 10) { putchar(i); } printf("Infinite loop avoided! \\o/\n"); return (0); }

Your output should look like this:

carrie@ubuntu:/debugging$ gcc -std=gnu89 1-main.c -o 1-main carrie@ubuntu:/debugging$ ./1-main Infinite loop incoming :( Infinite loop avoided! \o/ carrie@ubuntu:/debugging$ wc -l 1-main.c 24 1-main.c carrie@ubuntu:/debugging$

Repo:

• GitHub repository: alx-low_level_programming

• Directory: 0x03-debugging

• File: 1-main.c

2. 0 > 972?

This program prints the largest of three integers

2-main.c

#include <stdio.h> #include "main.h" /** * main - prints the largest of 3 integers * Return: 0 */ int main(void) { int a, b, c; int largest; a = 972; b = -98; c = 0; largest = largest_number(a, b, c); printf("%d is the largest number\n", largest); return (0); }

2-largest_number.c

#include "main.h" /** * largest_number - returns the largest of 3 numbers * @a: first integer * @b: second integer * @c: third integer * Return: largest number */ int largest_number(int a, int b, int c) { int largest; if (a > b && b > c) { largest = a; } else if (b > a && a > c) { largest = b; } else { largest = c; } return (largest); }

carrie@ubuntu:/debugging$ gcc -Wall -Werror -Wextra -pedantic -std=gnu89 2-largest_number.c 2-main.c -o 2-main carrie@ubuntu:/debugging$ ./2-main 0 is the largest number carrie@ubuntu:/debugging$

? That is definitely not right

Fix the code 2-largest_number so that it correctly prints out the largest of the three numbers, no matter the case

• Line count will not be checked for this task

Repo:

• GitHub repository: alx-low_level_programming

• Directory: 0x03-debugging

• File: 2-largest_number, main.h

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