#include "stdio.h"

main()

{int c[][4]={1,2,3,4,5,6,7,34,213,56,62,3,23,12,34,56);printf("%x,%x\n",c[2][2],*(*(c+1)+1);}

#include<stdio.h>

int a[3][3]=[1,2,3,4,5,6,7,8,9],*p;

main()

{ p=(int *)malloc(sizeof(int));

f(p,a);

printf("%d\n",*p); 

free(p);}

f(int *s, int p[][3])

{*s=p[1][1]; }

#include "stdio.h"

#include"string.h"

main()

{char a[3][20]={{"china"},{"isa"},{"bigcountry!"};

char k[100]={0},*p=k;

int i;

for(i=0;i<3;i++)

{p=strcat(p,a[i]);}

i=strlen(p);

printf("%d\n",i);}

则程序段的输出结果是(　　)

#include <stdio.h>

main() 

{

FILE *fp; int a[10]=[1,2,3},i,n; 

fp=fopen("dl.dat","w");

for(i=0;i<3;i++)

fprintf(fp, "%d",a[i]);

fprintf(fp, "n");

fclose(fp);

fp=fopen("dl.dat", "r");

fscanf(fp,"%d",&n);

fclose(fp);

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

}

int main(void)

{

FILE *fp;int i,k,n;

fp=fopen("data,dat",w+");

for (i=1;i<6;i++)

{

fprintf(fp,"%d",i);

if(i%3==0) fprintf(fp,"n");

}

rewind(fp); 

fscanf(fp,"%d%d",&k,&n);

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

fclose(fp);

return 0;

}

#include<stdio.h>

main()

{ FILE *fp; int i,a[6]={l,2,3,4,5,6};

    fp=fopen("d3.dat","wb+");

    fwrite(a,sizeof(int),6,fp); fseek(fp,sizeof(int)*3,SEEK_SET);/*该语句使读文件的位置指针从文件头向后移动3个int型数据*/

    fread(a,sizeof(int),3,fp); fclose(fp);

    for(i=0;i<6;i++)

        printf("%d,",a[i]);

} 

程序运行后的输出结果是(　　)

#include <stdio.h>

int main(void)

{

int a[12]=[1,2,3,4,5,6,7,8,9,10,11,12),*p[4],i;

for (i=0;i<4;i++)

p[i]=&a[i*3];

printf("%d\n",p[3][2]); 

return 0;

}

文件名 a1.txt a2.txt

内容 123< 321<

则下面程序段执行后的结果(　　)

#include "stdio.h"

void fc(FILE *p)

{    

   char c;

   while((c=fgetc(p))!=′#′)

      putchar(c);

}

main()

{    

    FILE *fp;

    fp=fopen("a1.txt","r");

    fc(fp);

    fclose(fp);

    fp=fopen("a2.txt","r");

    fc(fp);

    fclose(fp);

    putchar('\n');

} 

#include 

void main() 

{ FILE*fp=fopen("TEST",); 

fputc('A',fp);

fputc('\n',fp);

fputc('B',fp);

fputc('\n',fp);

fputc('C',fp);

fclose(fp);}