[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fI4ZZzsTsgcRcn-SUu3Rt9zrXlubPwcdiQe_6WXDgqWk":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2023-06-27 21:36:17",86177182,[8,9,10,11],"('a'>=cl)||('z'<=cl)","(cl>=a)&&(cl<=z)","'a'<=cl<='z'","(cl>='a')&&(cl<='z')",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},36,"87655d278478862060ec4c74c07ba7dc","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd7215a6f9b18cc01f824b38b31b8c383.jpg","C语言程序设计(2023年春季)","work_25795223","5.选择结构","判断char型变量cl是否为小写字母的正确表达式是",[21,33,41,50,59,68,75,84,93,98],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2023-06-05 13:52:25",47083922,[26,27,28,29],"语法错",""假"","0","1","已知x=43,ch='A',y=0;则表达式(x > = y&&ch < 'B'&&!y)的值是","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":40,"source":31,"type":32},[],47083923,[37,38,39,29],"4","3","2","设有:int a=1,b=2,c=3,d=4,m=2,n=2; 执行 (m=a > b)&&(n=c > d)后n的值是",{"answer":42,"createTime":23,"id":43,"options":44,"question":49,"source":31,"type":32},[],47083924,[45,46,47,48],"a < b < 0","a=0 < b","a=b < 0","0 > a > b","t=5; else t=2*s; printf("t=%d\\n",t); }",{"answer":51,"createTime":23,"id":52,"options":53,"question":58,"source":31,"type":32},[],47083925,[54,55,56,57],"if(a > b > c) temp=a","if((a=b) > 0) temp=a","int a=b=c=4","int a;scanf(%d,a)","下列语句正确的是( )",{"answer":60,"createTime":23,"id":61,"options":62,"question":67,"source":31,"type":32},[],47083926,[63,64,65,66],"switch(a); { case 1 printf("*\\n"); case 2 printf("**\\n");}","switch(b) { case a: printf("*\\n"); default: printf("\\n"); case b: printf("**\\n");}","switch(w){case1.0: printf("*\\n"); case2.0: printf("**\\n"); }","switch(a+b){ case 1: printf("*\\n"); case 2: printf("**\\n"); default: printf("\\n"); }","若有定义: float w; int a, b; 则合法的switch语句是",{"answer":69,"createTime":23,"id":70,"options":71,"question":74,"source":31,"type":32},[],47083927,[72,39,29,73],"41","331","printf("%d",++z); else printf("%d",++y); printf("%d\\n",x++); } 程序的运行结果是________",{"answer":76,"createTime":23,"id":77,"options":78,"question":83,"source":31,"type":32},[],47083928,[79,80,81,82],"l,3,3","1,3,2","3,2,1","1,2,3","printf("%d,%d,%d\\n",a,b,c); else printf("%d,%d,%d\\n",a,b,c); else printf("%d,%d,%d\\n",a,b,c); } 程序运行后的输出结果是________",{"answer":85,"createTime":23,"id":86,"options":87,"question":92,"source":31,"type":32},[],47083929,[88,89,90,91],"0.250000","0.500000","0.000000","1.000000","y=1.0\u002Fx; else y=10.0; printf("%f\\n",y); } 若运行时从键盘上输入2.0(表示回车),则上面程序的输出结果是",{"answer":94,"createTime":23,"id":95,"options":96,"question":97,"source":31,"type":32},[],47083930,[29,38,28,39],"c=0; else c++ ; printf("%d\\n",c); } 该程序的输出结果是",{"answer":99,"createTime":23,"id":100,"options":101,"question":106,"source":31,"type":32},[],47083931,[102,103,104,105],"在其之前未配对的if","缩排位置相同的if","在同一行上的if","其上面距它最近的,并且没有其他else与其配对的if相配对","为避免嵌套的条件分支语句if…else的二义性,C语言规定,C程序中的 else总是与()组成配对关系"]