I can't find my segmentation fault: 11 error - c

Question

I am new to C and wanted to break the series of videos to try a project, but I am stuck on a segmentation error. I get that that means I am trying to access memory I'm not allowed to, but I don't see the issue... I have a lot of code so I'll paste the parts that seem like they might be causing the problem and take out the includes. I am making a command-line text adventure game where two players can choose their name, class, and race (and currently the game ends after it asks them for the input). I appreciate it:
main.c
int main() {
// See term dimesions
// Create Player
struct User* Player;
CreatePlayer(Player);
// Create Player
struct User* Player2;
CreatePlayer(Player2);
return 0;
}
story.c
void CreatePlayer(struct User* Player) {
char name[MAXINPUT];
char class[MAXINPUT];
char race[MAXINPUT];
// Ask for name
printf("%sWhat is your name?\n:\t", KNRM);
getInput(name);
printf("%sHello %s!\n", KNRM, name);
{
// Ask for class
char question[] = "What is your class (Type '1' for Fighter or '2' for Mage)?\n:\t";
char options[] = "12";
char coorilations[][MAXINPUT] = {"Fighter", "Mage"};
questionLoop(question, options, coorilations, class);
InitializeClass(Player, class);
printf("%sYou are now a %s!\n", KNRM, class);
}
{
// Ask for race
char question[] = "What is your race (Type '1' for Human or '2' for Elf)?\n:\t";
char options[] = "12";
char coorilations[][MAXINPUT] = {"Human", "Elf"};
questionLoop(question, options, coorilations, race);
printf("%sYou are now a %s!\n", KNRM, race);
}
strcpy(Player->name, name);
strcpy(Player->race, race);
}
modules.c
void InitializeClass(struct User* Player, char* class) {
if (compare(class, "Fighter")) {
strcpy(Player->class.name, "Fighter");
Player->class.maxHealth = 10;
Player->class.health = 10;
Player->class.strength = 7;
} else if (compare(class, "Mage")) {
strcpy(Player->class.name, "Mage");
Player->class.maxHealth = 7;
Player->class.health = 7;
Player->class.strength = 10;
}
}
void getInput(char res[]) {
int i = 0;
int c;
printf("%s", KMAG);
c = getchar();
while(c != '\n') {
res[i++] = c;
c = getchar();
}
res[i] = '\0';
}
void questionLoop(char question[], char options[], char coorilations[][MAXINPUT], char var[]) {
printf("%s-------------------------------\n", KGRN);
printf("%s%s", KNRM, question);
getInput(var);
for(int i = 0; i < strlen(options); i++) {
if (options[i] == var[0] && var[1] == '\0') {
strcpy(var, coorilations[i]);
printf("%s", KNRM);
return;
}
}
printf("%sSorry that was not an option...\n", KNRM);
questionLoop(question, options, coorilations, var);
}
int compare(char one[], char two[]) {
for (int i = 0; one[i] != '\0'; i++) {
if (one[i] != two[i]) {
return 0;
}
}
return 1;
}
modules.h
#ifndef HEADER_FILE
#define HEADER_FILE
#define MAXINPUT 20
#define KNRM "\x1B[0m"
#define KRED "\x1B[31m"
#define KGRN "\x1B[32m"
#define KYEL "\x1B[33m"
#define KBLU "\x1B[34m"
#define KMAG "\x1B[35m"
#define KCYN "\x1B[36m"
#define KWHT "\x1B[37m"
// Classes
struct Class {
char name[MAXINPUT];
int strength;
int health;
int maxHealth;
};
// User struct
struct User {
char name[MAXINPUT];
char race[MAXINPUT];
struct Class class;
};
// Utilities
void getInput(char res[]);
void questionLoop(char question[], char options[], char coorilations[][MAXINPUT], char var[]);
int compare(char one[], char two[]);
// Game Setup Functions
void CreatePlayer(struct User*);
void InitializeClass(struct User* Player, char* class);
// Game Functions
void GameLoop(struct User*);
void ViewStats(struct User*);
#endif

Answer 1

You never allocate memory for your Player, so from you main method, you call CreatePlayer(), which in turns calls questionLoop(), which does nothing in terms of memory allocations, and then InitializeClass(), which does (amongst others):
strcpy(Player->class.name, "Fighter");
but Player doesn't exist, since you haven't actually create it, you haven't allocated for it, and thus a Segmentation fault occurs (here on the very next lines of that method).
Try dynamically allocating memory using malloc() (e.g. struct User* player = malloc(sizeof(struct User));, and don't forget to free() it when you are done.

Answer 2

This declares a pointer:
struct User* Player;
It is, however, completely uninitialized. It cannot be used before you populate it with something. The CreatePlayer function should assume this responsibility.
Typically these functions look like:
struct User* CreatePlayer() {
struct User *player = malloc(sizeof(struct User));
if (player == NULL) {
return NULL;
}
// Do stuff with player
return player;
}
Where that pattern can be used for any "Create" type function.