[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fl0mc8vmV0Ixdpg9-MG0Xl3vJdqtOC1g4ZB0ZO-rXsU8":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":21,"type":22},[],"2024-01-02 14:43:15",125558970,[8,9,10,11],"0","-1","非零值","NULL",{"courseId":13,"courseImg":14,"courseName":15},"5c593781e134e502205684e7f8d14d9c","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25b30343053994e8940089572d36015b.jpg","计算编程思维","若文件指针fp的当前位置处在文件末尾,则函数feof(fp)的返回值是( )",[18,23,32,41,50,59,66,71,77],{"answer":19,"createTime":5,"id":6,"options":20,"question":16,"source":21,"type":22},[],[8,9,10,11],"v1",0,{"answer":24,"createTime":5,"id":25,"options":26,"question":31,"source":21,"type":22},[],125558976,[27,28,29,30],"改变文件的位置指针的当前位置","文件的顺序读写","文件的随机读写","以上都不对","函数fseek可以实现的操作是( )",{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":21,"type":22},[],125558982,[36,37,38,39],"rewind(fp)","fseek(fp, 0, SEEK_SET)","fseek(fp, 0, SEEK_END)","fseek(fp, ftell(fp), SEEK_CUR)","以下不能将文件的位置指针重新移到文件开头位置的语句是( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":21,"type":22},[],125558991,[45,46,47,48],"fp = fopen("a:\\\\data.dat", "r+")","fp = fopen("a:\\\\data.dat", "w+")","fp = fopen("a:\\\\data.dat", "a+")","fp = fopen("a:\\\\data.dat", "w")","设数据文件data.dat中存储了若干个int型数据,文件指针fp已经与dada.dat文件相关联,若要修改该文件中已经存在的数据,则fopen函数的正确调用形式是( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":21,"type":22},[],125558996,[54,55,56,57],"fprintf("%d", x)","fprintf(fp, "%d", x)","fprintf("%d", x, fp)","fprintf("out.dat", "%d", x)","设文件指针fp已经与正确打开的out.dat文件相关联,将变量x的值以文本形式保存到文件out.dat中,以下正确的函数调用是( )",{"answer":60,"createTime":61,"id":62,"options":63,"question":64,"source":21,"type":65},[],"2024-01-02 14:51:58",125563455,[],"1、描述下列程序的功能 #include <stdio.h> #include <stdlib.h> int main( ) { char ch; FILE *fp; fp = fopen("al.txt", "r"); while ((ch = fgetc(fp)) != '#') { putchar(ch); } fclose(fp); return 0; }",2,{"answer":67,"createTime":61,"id":68,"options":69,"question":70,"source":21,"type":65},[],125563456,[],"2、描述下列程序的功能 #include <stdio.h> void WriteStr(char *filename, char *str) { FILE *fp; fp = fopen(filename, "w"); fputs(str, fp); fclose(fp); } int main( ) { WriteStr("t1.dat", "start"); WriteStr("t1.dat", "end"); return 0; }",{"answer":72,"createTime":61,"id":73,"options":74,"question":75,"source":21,"type":76},[],125563457,[],"将两个文件file1和file2连接成一个新文件newFile",4,{"answer":78,"createTime":79,"id":80,"options":81,"question":82,"source":21,"type":76},[],"2024-01-02 14:51:59",125563458,[],"日志维护.建立一个日志文件,记载每天的主要活动,活动的格式为:时间:事件.以周为单位,输出每周的活动记录"]