嵌入式Linux中關於c面試題？

2.某32位系統下, C++程序，請計算sizeof 的值(5分).char str[] = “ /”char *p = str ;int n = 10;請計算sizeof (str ) = ？（1）sizeof ( p ) = ？（2）sizeof ( n ) = ？（3）void Foo ( char str[100]){請計算sizeof( str ) = ？（4）}void *p = malloc( 100 );請計算sizeof ( p ) = ？（5）2>Void GetMemory(char **p, int num){*p = (char *)malloc(num);}void Test(void){char *str = NULL;GetMemory(&str, 100);strcpy(str, "hello");printf(str);}請問運行Test 函數會有什麽樣的結果？3>int i=10, j=10, k=3; k*=i+j; k最後的值是4>以下是求壹個數的平方的程序,請找出錯誤:　　#define SQUARE(a)((a)*(a))　　int a=5;　　int b;　　b=SQUARE(a++);4>C/C++編譯器中虛表是如何完成的？5>.對於壹個頻繁使用的短小函數,在C語言中應用什麽實現,在C++中應用什麽實現?6>unsigned char *p1; unsigned long *p2; p1=(unsigned char *)0x801000; p2=(unsigned long *)0x810000; 請問p1+5= ; p2+5= ;