大一C语言期末考试试题.doc

(D )。
main( )
{ char c;
int i;
for(i=65;i<68;i++)
{ c=i+32;
switch(c)
{ case ‘a’:printf("%c,",c);break;
case ‘b’:case ‘e’:printf("ok,");
default: printf("end");
}
}
}
A a,ok,end B a,ok,endend C a,ok,end,end D a,ok,ok
( B )。
#define A 3
#define B(a) (A+1)*a
main()
{ int x;
x=3*A+B(7);
printf("x=%d\n",x);
}
A x=93 B x=37 C x=60 D x=90
三写出下列程序的运行结果(10分,每小题2分)
( )
{ char c1=‘A’,c2=‘\144’,c3=‘\x44’,c=0xf5,x=13,a;
int i=0122,j=0xa4;
printf(“c1=%c,c4=%c\tc5=%c\n”,c1,c2,c3);
printf(“%d,%d\n”,i,j);
i=-34;
j=20;
printf(“%d,%d,%d\n”,i%j,i&j<<2,sizeof(j));
printf(“c=%d\n”,c|x);
a=c^x<<2;
printf(“a=%d\n”,a);
}
()
{
int x,y=1,z=10;
if(y!=0) x=5;
printf(“x=%d\t”,x);
x=1;
if(z<0)
if(y>0) x=3;
else x=5;
printf(“x=%d\n”,x);
if(z=y<0) x=3;
else if(y==0) x=5;
else x=7;
printf(“x=%d\t”,x);
printf(“z=%d\n”,z);
}
( )
{ char s[20]=“I like it.”,t[20]=“Are you?”,c[20];
int i=0;
while(s[++i]!=‘\0’)
t[i]=s[i];
t[i]=0;
printf(“string s:%s\n”,s);
printf(“string t:%s\n”,t);
}
i=5;
main( )
{ int i=3;
{ int i=10;
i++;
printf(“%d\n”,i);
}
f1( );
i+=1;
printf(“%d\n”,i);
}
int f1( )
{ i=i+1;
return(i);
}
()
{ int i=10,a[]={10,20,30,15},*p1;
char *b=”Learning”,**p2=&b;
p1=&i;
printf(“%4d”,*p1+20);
for(p1=a;p1<a+4;p1+=2)
printf(“%4d”,*p1);
printf(