University of Electronic Science Technology of China(UESTC) Case4 int a very long_name=1; i2=intfunc_ret_int(10,i1,i10); dbl=func_ret_double; c1=func ret_char_ptr(c1) int func ret_int(int a,int b,register int c) int dh d=b-6; return a+b+ci Real-Time Systems Lab LIAO Yong4 Real-Time Systems Lab LIAO Yong University of Electronic Science & Technology of China (UESTC)  Case 4 int a_very_long_name=1; i2=intfunc_ret_int(10, i1, i10); dbl=func_ret_double(); c1= func_ret_char_ptr(c1); } int func_ret_int(int a,int b, register int c) { int d; d=b-6; return a+b+c;} ……