第七章 结构体与共用体.doc

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1、 第七章 结构体与共用体(1)以下程序输出的是#includeunion un int j; char c2;void main() union un x; x.c0=10; x.c1=1; x.j=11; printf(%dn,x.j);(2)以下程序输出的是#includetypedef int INTEGER;void main() INTEGER x; x=12; printf(%dn,x);(3)以下程序输出的是#includemain() struct data int year,month,day; today; union long i;int k;char j; mix; p

2、rintf(%dn,sizeof(struct data); printf(%dn,sizeof(mix);(4)以下程序输出的是#includetypedef union int i; char c;IC;void main() IC ic; ic.i=0; ic.c=1; printf(%d,%dn,ic.c,ic.i); printf(%d,%d,%dn,sizeof(ic.i),sizeof(ic.c),sizeof(ic);(5)以下程序输出的是#includestruct n int x; char c;void func(struct n b) b.x=20; b.c=y;voi

3、d main()struct n a=10,x;func(a);printf(%d,%cn,a.x,a.c);(6)以下程序输出的是#includevoid main() struct exam struct int x,y;q;int a,b; e; e.a=1; e.b=2; e.q.x=e.a*e.b; e.q.y=e.a+e.b; printf(%d,%dn,e.q.x,e.q.y);(7)以下程序输出的是#includemain() struct int num;float score; person; int num=1; float score=2; person.num=2;

4、person.score=5; printf(%dn%fn,num,score);(8)以下程序输出的是#includestruct person int num; float score;main() struct person per,*p; per.num=1; per.score=2.5; p=&per; printf(%dn%fn,p-num,p-score);(9)以下程序输出的是#includetypedef struct int x,y;DATA;void main() DATA temp; temp.x=1; temp.y=2; printf(%d,%dn,temp.x,te

5、mp.y);(10)以下程序输出的是#includemain() union char c;int i; t; t.c=A; t.i=1; printf(%d,%dn,t.c,t.i);(11)以下程序输出的是#includestruct cmplx int x; int y;cnum2=1,3,2,7;void main() printf(%dn,cnum0.y*cnum1.x);(12)以下程序输出的是#includestruct tree int x; char*s;t;int func(struct tree t) t.x=10; t.s=computer; return(0);voi

6、d main() t.x=1; t.s=minicomputer; func(t); printf(%d,%sn,t.x,t.s);(13)以下程序输出的是#includemain() struct int x;char*y; tab2=1,ab,2,cd,*p=tab; printf(%c,%cn,*p-y,*(+p)-y);(14)以下程序输出的是#includemain() struct int x;char*y; tab2=1,ab,2,cd,*p=tab; printf(%cn,*p-y); printf(%cn,*(+p)-y);(15)以下程序输出的是#includemain()

7、 struct int x,y; s2=1,2,3,4,*p=s; printf(%dn,+p-x); printf(%dn,(+p)-x);(16)以下程序输出的是#includemain() struct int x,y; s2=1,2,3,4,*p=s; printf(%d,%dn,+p-x,(+p)-x); (17)以下程序输出的是#includestruct student int number; char*name; char*birthday; float score;void main()static struct student s=8,Li feng,78.5.20,99.

8、5;struct student*p=&s;printf(Name is %s,score is %.1fn,p-name,(*p).score);(18)以下程序输出的是#includestruct str float x; char*y;*m;char*student=Li,wang,sun;struct str group3=95.0,82.5,73.5;main() group0.y=student0; m=group; printf(%.1f,%sn,m-x,m-y);(19)以下程序输出的是#includeenum jiao5,jiao1,fen5,ren2,fen1;char*n

9、ame= jiao5,jiao1,fen5,ren2,fen1;main() enum coin m1,m2; m1=fen5; m2=jiao5; printf(%d,%dn,m1,m2); printf(%s,%sn,name(int)m1,name(int)m2);(20)以下程序输出的是#includestruct s int a; float b; char*c;void main()static struct s x=10,64.2,suen;struct s*p=&x;printf(%d,%.1f,%sn,x.a,x.b,x.c);printf(%d,%.1f,%sn,p-a,(

10、*p).b,p-c);(21)以下程序输出的是#include#include#includestruct s char*n; float g;*p;void main() struct s m; p=&m; p-g=80.0; p-n=(char*)malloc(50); strcpy(p-n,wang peng); printf(%s,%.1fn,p-n,p-g);(22)以下程序输出的是#includestruct link int a; struct link *next;void main()struct link m3=1,m+1,2,m+2,3,m,*p=m;do printf(

11、%dn,p-a-=p-next-a); p=p-next;while(p!=m);(23)以下程序输出的是#includeunion int a; char c2;u;main() char x; u.a=259; x=u.c0; u.c0=u.c1; u.c1=x; printf(%dn,u.a);(24)以下程序输出的是#includemain() struct data int year,month,day; today; printf(%dn,sizeof(struct data);(25)以下程序输出的是#includetypedef union long a2; int b4; c

12、har c8;TY;TY our;main() printf(%dn,sizeof(our);(26)以下程序输出的是#includemain() union aaa int i; char ch; double f; b; printf(%dn,sizeof(union aaa);(27)以下程序输出的是#includemain() struct cmplx int x,y; cnum2=1,3,2,7; printf(%dn,cnum0.y/cnum0.x*cnum1.x);(28)以下程序输出的是#includeunion pw int i; char ch2;a;main() a.ch

13、0=13; a.ch1=0; printf(%dn,a.i);(29)以下程序输出的是#includemain() int j; union int a;long b;unsigned char c; m; m.b=0x; printf(%xn,m.a); printf(%xn,m.c);(30)以下程序输出的是#includemain() struct EXAMPLE struct int x,y;in;int a,b; e; e.a=1; e.b=2; e.in.x=e.a*e.b; e.in.y=e.a+e.b; printf(%d,%dn,e.in.x,e.in.y);(31)以下程序输出的是#includemain() struct num int a;int b;float f; n=1,3,5.0; struct num*pn=&n; printf(%dn,pn-b/n.a*+pn-b);