#include "main.h"

//======================================================================
int main(int argc, char **argv)
{
	char buf[13] = "hello world\n";
	int res;
	
	if ( argc != 2 ) { printf("usage : ./prog05_file_high_level output_file \n"); return 1; }

	FILE *fd = NULL;
	
	fd = fopen( argv[1], "wr");
							if( fd == NULL ) { perror("open error"); return 1; }
	
	int ok = fprintf(fd, buf);
							if ( ok == -1 ) { perror("write error"); return 1; }
			
	res = 5 + 8;						
	ok = fprintf(fd, "sum = %d\n", res);
							if ( ok == -1 ) { perror("write error"); return 1; }	
							
	ok = fprintf(stdout, "I write on the standart output \n");	// Same as printf
							if ( ok == -1 ) { perror("write error"); return 1; }												
							
	ok = fclose(fd);						
							if ( ok == -1 ) { perror("close error"); return 1; }
return 0;
}
//^^^^^^^^^^^^^^^^^^^^^^^^^^ EOF ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^