Linux筆試題 面試真題！
時間：2016-09-22 來源：未知
一、選擇題
1、有以下程序
float f1(float n)
{
return n*n;
}
float f2(float n)
{
return 2*n;
}
main()
{
float (*p1)(float),(*p2)(float),(*t)(float),y1,y2;
p1 = f1;
p2 = f2;
y1 = p2(p1(2.0));
t = p1;
p1 = p2;
p2 = t;
y2 = p2(p1(2.0));
printf("%3.0f,%3.0f\n",y1,y2);
}
程序運行結果是()
A、8,16 B、8,8 C、16,16 D、4,8
2、有以下程序
int a = 2;
int f(int n)
{
static int a = 3;
int t = 0;
if(n%2)
{
static int a = 4;
t+=a++;
}
else
{
static int a = 5;
t+=a++;
}
return t+a++;
}
main()
{
int s = a,i;
for(i = 0;i < 3;i++)
{
s+=f(i);
}
printf("%d\n",s);
}
程序運行結果是()
A、26 B、28 C、29 D、24
3、有以下程序
#include
struct STU
{
int num;
float totalscore;
};
void f(struct STU p)
{
struct STU s[2] = {{20044,550},{20045,537}};
p.num = s[1].num;
p.totalscore = s[1].totalscore;
}
main()
{
struct STU s[2] = {{20041,703},{20042,580}};
f(s[0]);
printf("%d %3.0f\n",s[0].num,s[0].totalscore);
}
程序運行結果是()
A、20045,537 B、20044,550 C、20042,580 D、20041,703
4、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);
}
程序運行結果是()
A、sundan 20042 B、sundan 20044 C、lisiguo 20042 D、yangsan 20041
5、有以下程序
#include
struct STU
{
char name[10];
int num;
float totalscore;
};
void f(struct STU *p)
{
struct STU s[2] = {{"sundan",20044,550},{"penghua",20045,537}},*q = s;
++p;
++q;
*p = *q;
}
main()
{
struct STU s[2] = {{"yangsan",20041,703},{"lisiguo",20042,580}};
f(s);
printf("%s %d %3.0f\n",s[1].name,s[1].num,s[1].totalscore);
}
程序運行結果是()
A、sundan 20042 550 B、sundan 20044 537 C、lisiguo 20042 580 D、yangsan 20041 703
6、以下程序的功能是進行位運算
main()
{
usigned char a,b;
a = 7^3;
b = -4&3;
printf("%d %d\n",a,b);
}
程序運行結果是()
A、4 3 B、7 3 C、7 0 D、4 0
7、有以下程序
#include
main()
{
FILE *fp;
int i,k,n;
fp = fopen("data dat","w+");
for(i = 1;i < 6;i++)
{
fprintf(fp,"%d",i);
if(i%3 == 0)
{
fprintf(fp,"\n");
}
}
rewind(fp);
fscanf(fp,"%d %d",&k,&n);
printf("%d %d\n",k,n);
fclose(fp);
}
程序運行結果是()
A、0 0 B、125 45 C、1 4 D、1 2
二、填空題
1、寫出下面代碼的輸出內容
#include
main()
{
int a,b,c,d;
a = 10;
b = a++;
c = ++a;
d = 10*a++;
printf("b,c,d:%d %d %d",b,c,d);
return 0;
}
b = ___, c = ___, d = ___
2、在windows下，寫出運行結果
char str[] = "Hello";
char *p = str;
int n = 10;
sizeof(str) = ___
sizeof(p) = ___
sizeof(n) = ___
void func(char str[100])
{
void *p = malloc(60);
}
sizeof(str) = ___
sizeof(p) = ___
3、在windows下，寫出運行結果
void GetMemory(char *p)
{
p = (char *)malloc(100);
}
void Test(void)
{
char *str = NULL;
GetMemory(str);
strcpy(str,"hello world");
printf(str);
}
運行Test函數的結果_____
4、在windows下，寫出運行結果
struct info
{
char name[6];
char sex[2];
char age[6];
};
struct info sdo;
strcpy(sdo.name,"陳冠希");
strcpy(sdo.name,"男");
strcpy(sdo.name,"26");
printf("name = %s",sdo.name);
輸出結果是_____
5、在windows下，寫出運行結果
int var = 300;
char i;
for(i = 0;i < var;i++)
{
printf("%d",i+var);
}
printf("%d",var+100);
后一個輸出是____
6、在windows下，寫出運行結果
int arr[] = {6,7,8,9};
int *ptr = arr;
*(ptr++)+=123;
printf("%d,%d",*ptr,*(++ptr));
輸出結果是____
7、以下程序的功能是進行位運算
main()
{
unsigned char a,b;
a = 7^3;
b = -4&3;
printf("%d%d\n",a,b);
}
程序運行結果是____,____
