I can't open file in C - c

Question

When executed my code in Codeblocks , there is a problem like "error opening file" and I'm sure that there is a file as named "Names". Should I transport my .txt file to another file or something?
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct node {
char *word;
int count;
struct node *left;
struct node *right;
};
// Function to create a new node
struct node* createNode(char *word) {
struct node *newNode = malloc(sizeof(struct node));
newNode->word = strdup(word);
newNode->count = 1;
newNode->left = NULL;
newNode->right = NULL;
return newNode;
}
// Function to insert a new node into the binary search tree
struct node* insert(struct node *root, char *word) {
if (root == NULL) {
// Create a new node if the tree is empty
return createNode(word);
} else if (strcmp(word, root->word) < 0) {
// Insert the word in the left subtree if it is less than the root node's word
root->left = insert(root->left, word);
} else if (strcmp(word, root->word) > 0) {
// Insert the word in the right subtree if it is greater than the root node's word
root->right = insert(root->right, word);
}
// Increment the count if the word already exists in the tree
else {
root->count++;
}
return root;
}
// Function to find the depth of the binary search tree
int findDepth(struct node *root) {
if (root == NULL) {
return 0;
} else {
// Calculate the depth of the left and right subtrees
int leftDepth = findDepth(root->left);
int rightDepth = findDepth(root->right);
// Return the maximum of the left and right depths
if (leftDepth > rightDepth) {
return leftDepth + 1;
} else {
return rightDepth + 1;
}
}
}
// Function to count the number of nodes in the binary search tree
int main() {
// Open the text file for reading
FILE *file = fopen("C:\C\Names.txt", "r");
if (file == NULL) {
printf("Error opening file\n");
return 1;
}
// Initialize the root node to NULL
struct node *root = NULL;
char word[50];
int wordCount = 0;
// Read each word from the file and add it to the tree
while (fscanf(file, "%s", word) != EOF) {
root = insert(root, word);
wordCount++;
}
static int count = 0;
int countnodes(struct node *root) {
if (root != NULL) {
countnodes(root->left);
count++;
countnodes(root->right);
}
return count;
}
// Close the file
fclose(file);
printf(
"In total %d words were read from the file and saved in the binary search tree.\n",
wordCount);
printf("Number of nodes in the binary search tree: %d\n", countnodes(root));
printf("The depth of the binary search tree: %d\n", findDepth(root));
}
I tried to change my opening text codeblocks with another codes from internet. But it doesn't work again.

Answer 1

Your filepath should be written as "C:\\C\\Names.txt" or "C:/C/Names.txt".

Answer 2

Your fopen("C:\C\Names.txt", "r") should instead be fopen("C:\\C\\Names.txt", "r").
In the C language, the backslash character has a special meaning in string literals: It is used as an "escape character" to allow representing some common characters that are not found on most keyboards. A list of escape sequences can be found here on cppreference.
Taking a look at that list on cppreference, you'll see that to enter a single literal backslash in the interpreted value of a string literal, you must put two consecutive backslash characters in the source-code for the string literal, like "\\". The first one begins the "escape sequence", and the second one specifies that the escape sequence represents a literal backslash character.
Curiously, cppreference says that:
ISO C requires a diagnostic if the backslash is followed by any character not listed here
And your \C and \N are not in the list, so for your compiler to not have warned you, I'm guessing it must have been in a non-ISO-compliant mode, in which case you can search your compiler's documentation to see how to switch to an ISO-compliant mode.