[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fuq4-jWlvji2vUtdxF9VskRpqD3_sW4T03stof_t-mwI":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-06-06 20:52:36",195523340,[8,9,10,11],"3","4","5","6",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},15,"18a6eff8ae3b8d06162b2c688af63fee","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F977c8441c4ad7ffe8d096a66aac1dd20.PNG","C语言程序设计","work_43932925","第四章","阅读以下程序:main() { int x; scanf("%d",&x); if(x--<5) printf("%d",x); else printf("%d",x++); } 程序运行后,如果从键盘上输入5,则输出结果是 ( )",[21,32,41,50,56,65,68,76,85,91],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],195523330,[25,26,27,28],"true","非零值","0","1","表达式:10!=9的值是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],195523332,[36,37,38,39],"a>=10 or a<=0","a>=0|a<=10","a>=10 &&a<=0","a>=10‖a<=0","能正确表示逻辑关系:"a≥10或a≤0"的C语言表达式是( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],195523334,[45,46,47,48],"'a'<=c<= 'z'","(c>= 'a')||(c<= 'z')","('a'<=c)and ('z'>=c)","(c>= 'a')&&(c<= 'z')","若变量c为char类型,能正确判断出c为小写字母的表达式是( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":55,"source":30,"type":31},[],195523336,[25,54,27,28],"false","有如下程序段 int a=14,b=15,x; char c='A'; x=(a&&b)&&(c<'B'); 执行该程序段后,x的值为( )",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":30,"type":31},[],195523338,[60,61,62,63],"(x<=y)&&(y<=z)","(x<=y)AND(y<=z)","(x<=y<=z)","(x<=y)&(y<=z)","表示数学上的关系x<=y<=z的C语言表达式为( )",{"answer":66,"createTime":5,"id":6,"options":67,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":69,"createTime":5,"id":70,"options":71,"question":75,"source":30,"type":31},[],195523342,[72,73,74,28],"无输出","结果不确定","-1","语句:printf("%d",(a=2)&&(b= -2);的输出结果是( )",{"answer":77,"createTime":5,"id":78,"options":79,"question":84,"source":30,"type":31},[],195523344,[80,81,82,83],"0.000000","0.250000","0.500000","1.000000","有如下程序 main( ) { float x=2.0,y; if(x<0.0) y=0.0; else if(x<10.0) y=1.0\u002Fx; else y=1.0; printf("%f\\n",y); } 该程序的输出结果是( )",{"answer":86,"createTime":5,"id":87,"options":88,"question":90,"source":30,"type":31},[],195523346,[27,28,89,8],"2","有如下程序 main() { int a=2,b=-1,c=2; if(a)c=2;else if(b<0) c=0; else c++; printf("%d\\n",c); } 该程序的输出结果是( )",{"answer":92,"createTime":5,"id":93,"options":94,"question":99,"source":30,"type":31},[],195523348,[95,96,97,98],"CDE","C","CD","DE","下面输出的结果为( ). k=2;switch(k){ case 2: case 3:putchar('C'); case 4:putchar('D');break; default:putchar('E');}"]