五邑大学2015专插本C语言程序设计真题含答案

五邑大学2015专插本C语言程序设计真题含答案
五邑大学2015专插本C语言程序设计真题含答案

五邑大学2015年通信工程(计算机通信网络)专业

本科插班生招生考试《C 语言程序设计》试题

考试形式为闭卷、笔试。考试时间为120分钟,试卷满分为100分。

一 判断题,正确划√,错误划×。(每题1分,共10分)

1.C 语言的源程序不必通过编译就可以直接运行。( × )

2.在C语言中用到的任何一个变量都要规定其类型。( √ ) 3.C语言的标识符只能使用字母、数字和下划线三类字符,且第1位不能是数字字符。( √ )

4.continue 语句用在循环体中,可使整个循环不结束。( × )

5.静态局部变量只在本函数内可用。( √ )

6.在do-while 循环中,任何情况下都不能省略while 。( √ )

7.char *p="girl";的含义是定义字符型指针变量p ,p 的值是字符串"girl"。( × )

8.用fopen("file","r+"); 打开的文件"file"不能修改。( × )

9.一个共用体变量只能存放其中一个成员的值。( √ )

10.在不出现溢出的情况下,将一个数左移n 位,相当于给它扩大2n 倍。( √ )

二 单项选择题,错选、漏选、多选不得分。(每题2分,共40分)

1.下面关于"A"的说法正确的是( B )。

A ) 它代表一个字符常量

B ) 它代表一个字符串常量

C ) 它代表一个字符

D ) 它代表一个变量

2.若以下选项中的变量已正确定义,则正确的赋值语句是( C )。

A ) x1=26.8%3 ;

B ) 1+2=x2 ;

C ) x3=0x12 ;

D ) x4=1+2=3;

3.为表示关系x ≥y ≥z ,正确C 语言表达式是( A )。

A ) (x>=y)&&(y>=z)

B ) (x>=y) AND (y>=z)

C ) (x>=y>=z)

D ) (x>=z)&(y>=z)

4.设 a=5,b=6,c=7,d=8,m=2,n=2, 则执行 (m=a>b)&&(n=c

A ) 1

B ) 2

C ) 3

D ) 4

5.设a=8、b=13,则printf("%d",(a>b)?a:b); 则输出结果是 ( C )。

A ) 5

B ) 8

C ) 13

D ) 21

6.在C 语言中要求参加运算的数必须是整数的运算符是( C )。

A ) /

B ) !

C ) %

D ) = =

7.设整型变量a 为5,使b 不为2的表达式是( D )。

A ) b=a/2

B ) b=5-(---- a)

C ) b=a>3?2:1

D ) b=a%2

8.若x=5,y=4 则y*=x+5; y 的值为( A )。

A) 40 B) 20 C) 15 D) 30

9.关于break 语句的正确说法是( B )。

A ) 无论在任何情况下,都中断程序的执行,退出到系统下一层。

B ) 在多重循环中,只能退出最靠近的那一层循环语句。

C ) 跳出多重循环。

D ) 只能修改控制变量。

10.设有定义:float a=2,b=4,h=3;,以下C 语言表达式与代数式1/2(a+b)^h 计算结果不相符的是( D )。 A ) (a+b)*h/2 B ) (1/2)*(a+b)*h C ) (a+b)*h*1/2 D ) h/2*(a+b) “*”的运算优先级高于“/”的运算优先级

19.设a=15,则表达式“(a=3*5,a*4),a+5”的值是( C )。 A ) 15 B ) 60 C ) 20 D ) 75

20.结构化程序设计的基本结构不包含( D )。 A ) 顺序 B ) 选择 C ) 循环 D ) 跳转

三 综合题。(第1-2题每题3分,第3-6题每题6分,共30分)

1.阅读以下程序代码,写出程序运行结果。 int main()

{ int i,sum=0;

for(i=1;i<=20;i++) { sum+=i; } printf(“%d”,sum); return 0; }

程序运行后输出: 210 。

Sum=1+2+3+4+5+。。。+19+20

2.阅读以下程序代码,写出程序运行结果。 int main() { int i,j,x=0; for (i=0;i<2;i++) { for (j=0;j<3;j++) { if (j%2= =0) continue; x=x+1; } }

printf(“%d”,x); return 0; }

程序运行后输出: 2 。

3.下列程序的功能是求10的阶乘,改正程序中存在的错误(错误行已标出,不可改动其他程序代码否则不能得分),使程序能正确运行并得到正确的结果。 int main()

{ int i=1,n=10; long t=1; do {

t=t*i; i++;

}while(i<=n) //此行错误,正确为: while(i<=n); prinft(“%d ”,t); //此行错误,正确为: printf(“%ld ”,t); return 0;

}

4.下列程序的功能是采用选择法对10个整数进行排序,改正程序中存在的错误(错误行已标出,不可改动其他程序代码否则不能得分),使程序能正确运行并得到正确的结果。 int main()

{ int a[10]={18,6,7,35,24,69,52,21,11,41}; int i,j,k,t;

for(i=0; i<10; i++) { k=i;

for(j=0;j

t=a[i],a[i]=a[j],a[j]=t; //此行错误,正确为: t=a[i],a[i]=a[k],a[k]=t; } }

for(i=0;i<10;i++) printf(“%d ”,a[i]); return 0; }

5.下列程序为使用指针输出数组所有元素。阅读程序,将程序中缺少的代码补充完整,使程序能正确运行并得到正确的结果。(每一空行只填写一条语句或一个表达式,不写、多写、错写不给分。) int main()

{ int *p,i,num[10]={1,2,3,4,5,6,7,8,9,10}; p=&num[i]; i=0;

while(i<10)

{ printf(“%d “,*p); p++;

i++; }

return 0; }

6.下列程序中的数组a 包括10个整型元素,从a 中第二个元素起,分别将后项减前项之差存入数组b ,并按每行3个元素的形式输出数组b 。阅读程序,将程序中缺少的代码补充完整,使程序能正确运行并得到正确的结果。(每一空行只填写一条语句或一个表达式,不写、多写、错写不给分。)

int main()

{

int a[10],b[10], i;

for(i=0; i<10; i++)

scanf(“%d”,&a[i]);

for (i=1;i<10; i++)

b[i]= a[i+1]-a[i] ;

for(i=1;i<10;i++)

{ printf(“%3d”, b[i]);

if ( i%3==0 ) printf(“\n”);

}

}

四编程题。(第1题8分,第2题12分,共20分)

1.编写函数strLen,计算并返回给定字符串的长度。

int strLen(char *p)

{

int number = 0;

while (*p)

{

number++;

p++;

}

return number;

}

int main()

{

char *str = "asdfg";

int len = strLen(str);

printf("%d\n",len);

system("pause");

return 0;

}

2.编写反转函数reverse,将输入的整数反转并返回,如:输入-1234转换成-4321,输入6853

转换为3586。

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