Creating files in C is done using the standard I/O library <stdio.h>. You can create, write to, or read from files using functions like fopen(), fprintf(), fputs(), etc. ??

? Basic Steps to Create a File in C

1. Include the header: #include <stdio.h>

2. Use fopen() with "w" mode to create/write a file

3. Use functions like fprintf() or fputs() to write to it

4. Close the file with fclose()

? Example: Create and Write to a File

c
#include <stdio.h>int main() {    FILE *file;    // Open file in write mode ("w" = write)    file = fopen("example.txt", "w");    // Check if file opened successfully    if (file == NULL) {        printf("? Error creating file.\n");        return 1;    }    // Write text into the file    fprintf(file, "Hello from C!\n");    fputs("This is another line.\n", file);    // Close the file    fclose(file);    printf("? File created and written successfully.\n");    return 0;}

? File Modes in fopen()

?? Notes

• "w" mode overwrites the file if it already exists.

• Always check if the FILE * pointer is NULL before writing.

• Use fclose() to avoid file corruption or memory leaks.