🔢 数字2
224443有以下程序（提示：程序中fseek(fp,-2L*sizeof(int),SEEK_END);语句的作用是使位置指针从文件尾向前移2*sizeof(int)字节）#include<stdio.h>main（）{FILE*fp;inti,a[4]={1,2,3,4},b;fp=fopen("data.dat","wb");for(i=0;i<4;i++)fwrite(&a,sizeof(int),1,fp);fclose(fp);fp=fop 224445运行下列程序段，输出结果是（）。structcountry{intnum;charname[10];}x[5]={1,"China",2,"USA",3,"France",4,"England",5,"Spanish"};structcountry*p;p=x+2;printf("%d,%c",p->num,(*p).name[2]); 224451程序运行后的输出结果是（）。#include<stdio.h>main（）{intb[3][3]={0,1,2,0,1,2,0,1,2};inti,j,t=1;for(i=0;i<3;i++)for(j=i;j<=i;j++)t+=b[b[j]];printf("%d\n",t);}