How to compile code in multiple files, c program?

[aurquiel]

Hi

I am doing a simple program but i cant compile it since i divide the code in multiple files but the compiler command only include de main.c file

Solution sturcture

|__business
| |__person.c
| |__person.h
|__main.c

files

mian.c
`#include <stdio.h>
#include <stdlib.h>
#include "./business/Person.h"

int main(void)
{
Person edgar = createPerson("Jhon Doe", 35);
edgar.resume(&edgar);
}`

person.h
`#ifndef PERSON_H
#define PERSON_H

typedef struct Person
{
char name[50];
int age;
char *(*resume)(struct Person *p);
void (*release)(struct Person *p);
} Person;

Person createPerson(char *name, int age);

#endif // PERSON_H`

person.c
`#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "Person.h"

char *resume(struct Person *p)
{
const int bufferSize = 100;
char *buffer = malloc(bufferSize * sizeof(char));
snprintf(buffer, bufferSize, "Name: %s, Age: %d", p->name, p->age);
return buffer;
}

void release(struct Person *p)
{
free(p->name);
}

Person createPerson(char *name, int age)
{
Person p;
strcpy(p.name, name);
p.age = age;
p.resume = resume;
p.release = release;
return p;
}`

here is the output

• Ejecutando tarea: C:\Program Files\CodeBlocks\MinGW\bin\gcc.EXE -Wall -Wextra -g3 c:\Users\Edgar Gomez\Desktop\relearnC\main.c -o c:\Users\Edgar Gomez\Desktop\relearnC\output\main.exe

C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\EDGARG~1\AppData\Local\Temp\cciw4GDE.o: in function main': C:/Users/Edgar Gomez/Desktop/relearnC/main.c:7:(.text+0x22): undefined reference to createPerson'
collect2.exe: error: ld returned 1 exit status

• El proceso del terminal "C:\Program Files\CodeBlocks\MinGW\bin\gcc.EXE '-Wall', '-Wextra', '-g3', 'c:\Users\Edgar Gomez\Desktop\relearnC\main.c', '-o', 'c:\Users\Edgar Gomez\Desktop\relearnC\output\main.exe'" finalizó con el código de salida 1.
• Las tareas reutilizarán el terminal, presione cualquier tecla para cerrarlo.