struct   KeyWord

{

char Key[20];

int ID;

}kw[] = { "void", 1, "char", 2, "int", 3, "float", 4, "double", 5 };

则printf("%c,%d\n", kw[3].Key[0], kw[3].ID);语句的输出结果为（ ）

#include<stdio.h>

#include<string.h>

void main()

{

char ss[10]="12345";

gets(ss);

printf("%s\n",ss);

}

int a, b;

void fun()

{

a=100; b=200;

}

void main()

{

int a=5, b=7;

fun();

printf("%d%d \n",a,b);

}

int i; 

int x[4][4] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };

for (i = 0; i<4; i++) 

printf("%3d", x[i][3 - i]);

下列选项中哪一项是正确的输出结果（ ）

{

int x;

int *y;

} *p;

int dt[4]={10,20,30,40};

struct st aa[4]={50,&dt[0],60,&dt[1],70,&dt[2],80,&dt[3]};

void main()

{

p=aa;

printf("%d ", ++p->x);

printf("%d ", (++p)->x);

printf("%d ", ++(*p->y));

}

#include<stdio.h>

void main()

{

printf("%d\n", NULL);

}