.h file in c code example
Example 1: header file headers
#ifndef HEADER_FILE
#define HEADER_FILE
the entire header file file
#endif
Example 2: file in C
//to open a file
FILE=*fp;
fp=fopen("one.txt", "w");
//to close file
fclose(fp);
#ifndef HEADER_FILE
#define HEADER_FILE
the entire header file file
#endif
//to open a file
FILE=*fp;
fp=fopen("one.txt", "w");
//to close file
fclose(fp);