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单选题设有如下定义:struct sk{int a;float b;}data,*p; 若要使p指向data中的a域,正确的赋值语句是()

A. p=(struct sk*)data.a

B. p=&data.a

C. *p=data.a

D. p=(struct sk*)&data.a

C语言程序设计2课程封面

学科：C语言程序设计2

时间：2024-04-16 04:54:47

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有如下定义: struct person{char name[9];int age;}; struct person class[10]={"John",17,"Paul",19,"Mary",18,"Adam",16,}; 根据上述定义,能输出字母M的语句是()

A. printf("%c\n",class[2].name[1])B. printf("%c\n",class[2].name[0])C. printf("%c\n",class[3].name[0])D. printf("%c\n",class[3].name[1])

有以下程序: #include <stdio.h> struct S {int a,b;}data[2]={10,100,20,200}; main() {struct S p=data[1]; printf("%d\n",++p.a); } 程序运行后的输出结果是()

A. 20B. 11C. 10D. 21

以下程序运行后的输出结果是(). struct STU {char name[10]; int num; int score; }; main() {struct STU s[5]={ {"YangSan",20041,703}, {"LiSiGuo",20042,580}, {"WangYin",20043,680}, {"SunDan",20044,550}, {"Penghua",20045,537} },*p[5],*t; int i,j; for(i=0;i<5;i++)p[i]=&s[i]; for(i=0;i<4;i++) for(j=i+1;j<5;j++) if(p[i]->score>p[j]->score) {t=p[i];p[i]=p[j];p[j]=t;} printf("%d %d\n",s[1].score,p[1]->score); }

A. 580 550B. 550 580C. 680 680D. 580 680

若有以下程序段,则使用错误的选项是(). struct student { int num; int age; }; struct student stu[3]={{1001,20},{1002,19},{1004,20}}; main(); { struct student *p; p=stu; … ; }

A. p=&stu.ageB. (p++)->numC. (*p).numD. p++

有以下程序: #include struct ord {int x,y;}dt[2]={11,12,13,14}; main(){ struct ord *p=dt; printf("%d,",++p->x);printf("%d\n",++p->y); } 程序运行后的输出结果是()

A. 13,14B. 11,12C. 14,1lD. 12,13

设有如下定义: struct sk {int m; float x; }data,*q; 若要使q指向data中的m域,正确的赋值语句是()

A. q=(struct sk*)&data.mB. q=(struct sk*)data.mC. *q=data.mD. q=&data.m

有以下程序 #include struct STU {char name[10]; int num; }; void f(char *name,int num) {struct STU s[2]={{"SunDan",20044},{"Penghua",20045}}; num=s[0].num; strcpy(name,s[0].name); } main(){struct STU s[2]={{"YangSan",20041},{"LiSiGuo",20042}},*p; p=&s[1];f(p->name,p->num); printf("%s%d\n",p->name,p->num); } 程序运行后的输出结果是()

A. SunDan 20044B. SunDan 20042C. YangSan 20041D. LiSiGuo 20042

有以下说明和定义语句. struct student {int age; char num[8]; }; struct student stu[3]={{20,"20041"},{21,"20042"},{19,"20043"}}; struct student *p=stu; 以下选项中,引用结构体变量成员的表达式错误的是()

A. (*p).numB. p->numC. (p++)->numD. stu[3].age

设有如下定义:struct sk{int a;float b;}data,*p; 若要使p指向data中的a域,正确的赋值语句是()

A. p=(struct sk*)data.aB. p=&data.aC. *p=data.aD. p=(struct sk*)&data.a

若有以下说明,则对结构体变量stud1中成员age的不正确引用是(). struct student {int age;int num; }stud1,*p; p=&stud1

A. (*p).ageB. student.ageC. p->ageD. stud1.age

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