1 2 3 func0()4int func0() 5 { 6 unsigned char d; 7 char c; 8 9 return d* c; 10 } 11 func1()12int func1() 13 { 14 unsigned char d; 15 char c; 16 17 return c* d; 18 } 19 20 func2()21int func2() 22 { 23 unsigned char d; 24 int c; 25 26 return d *c; 27 } 28 func3()29int func3() 30 { 31 unsigned char d; 32 int c; 33 34 return c *d; 35 } 36