... clrscr();printf (" CHUONG TRINH TINH TIEN CUOC DIEN THOAI");printf ("\n Thoi gian duoc tinh theo he thong 24 gio");printf ("\n Thoi gian thuc ... dau (gio, phut, giay) : ");scanf ("%f%f%f",&h1,&m1,&s1);/* Kiem tra tinh hop le cua thoi gian nhap vao */if (h1>24){ printf ("\n Vui long nhap lai so gio, ... thuc (gio, phut, giay) : ");scanf ("%f%f%f",&h2,&m2,&s2);/* Kiem tra tinh hop le cua thoi gian nhap vao */if (h2>24){ printf ("\n Vui long nhap lai so gio,...