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一、单项选择题（本大题共30小题，每题1.5分，共45分）","67b3f96f982256c86fd6a237",{"_395":401,"_402":265,"_397":403,"_362":404},"单选","qnumber","（）是合法的用户自定义标识符。\n（A）b - b\n（B）float\n（C）\n（D）_isw","67b32089303d691c53e86c32",{"_395":401,"_402":269,"_397":406,"_362":407},"（）是不正确的字符常量。\n（A）'\\n'\n（B）'1'\n（C）\"a\"\n（D）'\\0'","67b32089303d691c53e86c33",{"_395":401,"_402":271,"_397":409,"_362":410},"表达式（）的值是0。\n（A）3 % 5\n（B）3 / 5.0\n（C）3 < 5\n（D）3 / 5","67b32089303d691c53e86c34",{"_395":401,"_402":273,"_397":412,"_362":413},"以下符合C语言语法的实型常量是（）。\n（A）1.2E0.5\n（B）3.14159E\n（C）5E - 3\n（D）E15","67b32089303d691c53e86c35",{"_395":401,"_402":275,"_397":415,"_362":416},"对于以下的变量定义，不正确的表达式是（）。\n```c\nstruct node{int j,k;}x, *p = &x;\n```\n（A）p -> k = 2\n（B）(*p).k = 2\n（C）x.k = 2\n（D）x -> k = 2","67b32089303d691c53e86c36",{"_395":401,"_402":277,"_397":418,"_362":419},"设变量定义为“int s[] = \"hello\\nworld\\n\";”，则数组s中有（）个元素。\n（A）12\n（B）13\n（C）14\n（D）15","67b32089303d691c53e86c37",{"_395":401,"_402":298,"_397":421,"_362":422},"下列条件语句中，功能与其他语句不同的是（）。\n（A）if(a) printf(\"%d\\n\",x); else printf(\"%d\\n\",y);\n（B）if(a == 0) printf(\"%d\\n\",y); else printf(\"%d\\n\",x);\n（C）if(a!= 0) printf(\"%d\\n\",x); else printf(\"%d\\n\",y);\n（D）if(a == 0) printf(\"%d\\n\",x); else printf(\"%d\\n\",y);","67b32089303d691c53e86c38",{"_395":401,"_402":315,"_397":424,"_362":425},"C标准库函数中，数学函数的原型在（）头文件中。\n（A）stdio.h\n（B）math.h\n（C）string.h\n（D）ctype.h","67b32089303d691c53e86c39",{"_395":401,"_402":317,"_397":427,"_362":428},"以下选项中非法的表达式是（）。\n（A）x = (a = 1,b = a + 1)\n（B）i = j == 0\n（C）(char)(65 + 3)\n（D）x + 1 = x + 1","67b32089303d691c53e86c3a",{"_395":401,"_402":336,"_397":430,"_362":431},"若变量c为char类型，则能正确判断出c为小写字母的表达式是（）。\n（A）'a' <= c <= 'z'\n（B）(c >= 'a') || (c <= 'z')\n（C）('a' <= c) and ('z' >= c)\n（D）(c >= 'a') && (c <= 'z')","67b32089303d691c53e86c3b",{"_395":401,"_402":340,"_397":433,"_362":434},"语句“for(a = 0,b = 0;b!= 100 && a < 5;a++) scanf(\"%d\",&b);”若不输入100，那么scanf函数的执行次数是（）。\n（A）4\n（B）6\n（C）5\n（D）1","67b32089303d691c53e86c3c",{"_395":401,"_402":344,"_397":436,"_362":437},"以下定义语句正确的是（）。\n（A）int n = 5,a[n][n];\n（B）int a[][3] = {{1,2},{3,4},{5,6}};\n（C）int a[][3];\n（D）int a[][] = {{1,2},{3,4},{5,6}};","67b32089303d691c53e86c3d",{"_395":401,"_402":348,"_397":439,"_362":440},"有数组定义“char array[] = \"China\";”，则数组array所占的空间是（）。\n（A）4个字节\n（B）5个字节\n（C）6个字节\n（D）7个字节","67b32089303d691c53e86c3e",{"_395":401,"_402":352,"_397":442,"_362":443},"C语言程序的基本单位是（）。\n（A）函数\n（B）过程\n（C）子程序\n（D）子例程","67b32089303d691c53e86c3f",{"_395":401,"_402":445,"_397":446,"_362":447},15,"C语言中用于结构化程序设计的三种基本结构是（）。\n（A）顺序结构、选择结构、模块结构\n（B）选择结构、循环结构、模块结构\n（C）while、do…while、for\n（D）顺序结构、选择结构、循环结构","67b32089303d691c53e86c40",{"_395":401,"_402":449,"_397":450,"_362":85},16,"以下程序段，while循环执行的次数是（）。\n```c\nint k = 0; while(k = 1) k++;\n```\n（A）无限次\n（B）有语法错误，不能执行\n（C）一次也不执行\n（D）执行1次",{"_395":401,"_402":452,"_397":453,"_362":454},17,"以下关于函数的说法，错误的是（）。\n（A）函数可以递归调用\n（B）数组名可以作为函数的实际参数\n（C）函数可以嵌套定义\n（D）实际参数和形式参数必须对应","67b32089303d691c53e86c42",{"_395":401,"_402":456,"_397":457,"_362":458},18,"设有函数调用语句“func((a1,a2,a3),(a4,a5));”，则函数func中有（）个形参。\n（A）1\n（B）5\n（C）2\n（D）不合法","67b32089303d691c53e86c43",{"_395":401,"_402":460,"_397":461,"_362":462},19,"当调用函数时，实参是一个数组名，则向函数传送的是（）。\n（A）数组的长度\n（B）数组的首地址\n（C）数组每一个元素的地址\n（D）数组每一个元素的值","67b32089303d691c53e86c44",{"_395":401,"_402":464,"_397":465,"_362":466},20,"以下叙述中不正确的是（）。\n（A）在不同的函数中可以使用相同名字的变量\n（B）函数中的形式参数是局部变量\n（C）在一个函数内的复合语句中定义的变量在本函数范围内有效\n（D）在一个函数内定义的变量只在本函数范围内有效","67b32089303d691c53e86c45",{"_395":401,"_402":468,"_397":469,"_362":470},21,"设变量定义为“int a[2] = {1,3}, *p = &a[0] + 1;”，则 *p的值是（）。\n（A）2\n（B）3\n（C）4\n（D）&a[0] + 1","67b32089303d691c53e86c46",{"_395":401,"_402":472,"_397":473,"_362":474},22,"下列程序段的输出结果是（）。\n```c\nint *p, *q,k = 1,j = 10; p = &j; q = &k; p = q; (*p)++; printf(\"%d\", *q);\n```\n（A）1\n（B）2\n（C）10\n（D）11","67b32089303d691c53e86c47",{"_395":401,"_402":476,"_397":477,"_362":478},23,"设变量定义为“int a[4];”，则不符合C语言语法的表达式是（）。\n（A）* a\n（B）a[0]\n（C）a\n（D）a[0]++","67b32089303d691c53e86c48",{"_395":401,"_402":480,"_397":481,"_362":482},24,"不正确的赋值或赋初值的方式是（）。\n（A）char str[] = \"string\";\n（B）char str[10]; str = \"string\";\n（C）char *p = \"string\";\n（D）char *p; p = \"string\";","67b32089303d691c53e86c49",{"_395":401,"_402":484,"_397":485,"_362":486},25,"设变量定义为“int x, *p = &x;”，则 & *p相当于（）。\n（A）p\n（B）*p\n（C）x\n（D）* &x","67b32089303d691c53e86c4a",{"_395":401,"_402":488,"_397":489,"_362":490},26,"若有以下定义，则值为4的表达式是（）。\n```c\nint a[] = {1,2,3,4,5,6,7,8,9,10}, *p = a;\n```\n（A）p += 3, * (p++)\n（B）p += 3, * ++p\n（C）p += 4, * p++\n（D）p += 4, ++ * p","67b32089303d691c53e86c4b",{"_395":401,"_402":492,"_397":493,"_362":494},27,"程序中对fun函数的说明为“void *fun();”，此说明的含义是（）。\n（A）fun函数无返回值\n（B）fun函数的返回值可以是任意的数据类型\n（C）fun函数的返回值是无值型的指针类型\n（D）指针fun指向一个函数，该函数无返回值","67b32089303d691c53e86c4c",{"_395":401,"_402":381,"_397":496,"_362":497},"有数组定义“int a[3][4];”，不能表示a[1][1]的是（）。\n（A）*(a[1]+1)\n（B）*(&a[1][1])\n（C）(*(a + 1))[1]\n（D）*(a + 5)","67b32089303d691c53e86c4d",{"_395":401,"_402":499,"_397":500,"_362":501},29,"下列属于不合法的main函数命令行参数表示形式的是（）。\n（A）main(int a,char *c[])\n（B）main(int arc,chaarv)\n（C）main(int argc,char *argv[])\n（D）main(int argv,char *argc[])","67b32089303d691c53e86c4e",{"_395":401,"_402":503,"_397":504,"_362":505},30,"下列关于C语言数据文件的叙述，正确的是（）。\n（A）文件由ASCII码字符序列组成，C语言只能读写文本文件\n（B）文件由二进制数据序列组成，C语言只能读写二进制文件\n（C）文件由记录序列组成，可按数据存放形式分为二进制文件和文本文件\n（D）文件由数据流形式组成，可按数据的存放形式分为二进制文件和文本文件","67b32089303d691c53e86c4f",{"_395":396,"_397":507,"_362":508},"## 二、填空题（本大题共15小题，每题2分，共30分）","67b3f96f982256c86fd6a238",{"_395":510,"_402":265,"_397":511,"_362":512},"填空","一个C语言编写的程序是从（）开始执行的。","67b32089303d691c53e86c51",{"_395":510,"_402":269,"_397":514,"_362":515},"一个C语言程序的开发过程包括：编辑、（）、链接和运行4个步骤。","67b32089303d691c53e86c52",{"_395":510,"_402":271,"_397":517,"_362":518},"C语言源程序文件的扩展名是（）。","67b32089303d691c53e86c53",{"_395":510,"_402":273,"_397":520,"_362":521},"表达式!15的值是（）。","67b32089303d691c53e86c54",{"_395":510,"_402":275,"_397":523,"_362":524},"设ch是字符型变量，判断ch为英文字母的表达式是（）。","67b32089303d691c53e86c55",{"_395":510,"_402":277,"_397":526,"_362":527},"执行下列语句后，变量i的值是（）。\n```c\nint i; for(i = 1; i++ <= 5;);\n```","67b32089303d691c53e86c56",{"_395":510,"_402":298,"_397":529,"_362":530},"若在程序中用到putchar函数，应在程序开头写上包含命令（），若在程序中用到strlen函数，应在程序开头写上包含命令（）。","67b32089303d691c53e86c57",{"_395":510,"_402":315,"_397":532,"_362":533},"下面程序的运行结果是（）。\n```c\nchar c[5] = {'a', 'b', '\\0', 'c', '\\0'}; printf(\"%s\", c);\n```","67b32089303d691c53e86c58",{"_395":510,"_402":317,"_397":535,"_362":536},"定义“double w[10];”，则w数组元素下标的上限是（），下限是（）。","67b32089303d691c53e86c59",{"_395":510,"_402":336,"_397":538,"_362":539},"数组int a[3][4];共定义了（）个数组元素。","67b32089303d691c53e86c5a",{"_395":510,"_402":340,"_397":541,"_362":542},"C语言的预处理语句以（）开头。","67b32089303d691c53e86c5b",{"_395":510,"_402":344,"_397":544,"_362":545},"下列程序段的输出结果是（）。\n```c\n#define MIN(x,y) (x)<(y)? (x):(y)\nprintf(\"%d\",10 * MIN(10,15));\n```","67b32089303d691c53e86c5c",{"_395":510,"_402":348,"_397":547,"_362":548},"对于以下递归函数f，调用f(3)的返回值是（）。\n```c\nf(int n)\n{return((n <= 0)? n:f(n - 1) + f(n - 2));}\n```","67b32089303d691c53e86c5d",{"_395":510,"_402":352,"_397":550,"_362":551},"下列程序段的输出结果是（）。\n```c\nchar *str[] = {\"abcd\", \"efgh\", \"ijkl\", \"mnop\"}; printf(\"%s\", *(str + 1)+1);\n```","67b32089303d691c53e86c5e",{"_395":510,"_402":445,"_397":553,"_362":554},"变量a所占内存字节数是（）。\n```c\nunion U\n{\n char st[4];\n int i;\n long l;\n};\nstruct A\n{\n int c;\n union U u;\n}a;\n```","67b32089303d691c53e86c5f",{"_395":396,"_397":556,"_362":557},"## 三、程序填空题（本大题共3小题，每题7分，共21分）","67b3f96f982256c86fd6a239",{"_395":510,"_402":265,"_397":559,"_362":560},"程序功能：从键盘上输入若干个学生的成绩（当输入为负数时结束输入），统计并输出最高成绩和最低成绩。\n```c\n#include \nvoid main()\n{\n float x, amax, amin;\n scanf(\"%f\", &x);\n amax = x;\n amin = x;\n while (①)\n {\n if (x > amax) amax = x;\n if (②) amin = x;\n scanf(\"%f\", &x);\n }\n printf(\"\\nmax = %f\\nmin = %f\\n\", amax, amin);\n}\n```","67b32089303d691c53e86c61",{"_395":510,"_402":269,"_397":562,"_362":563},"程序功能：调用swap函数交换a和b的值，并输出交换后a和b的值。\n```c\n#include \nvoid main()\n{\n void swap(int *p, int *q);\n int a = 3, b = 5;\n swap(①);\n printf(\"After swap %d,%d\", a, b);\n}\nvoid swap(int *p, int *q)\n{\n int t;\n ②;\n ③;\n ④;\n}\n```","67b32089303d691c53e86c62",{"_395":510,"_402":271,"_397":565,"_362":566},"程序功能：统计输入字符中每个大写字母的个数，#号为输入结束标志。\n```c\n#include \n#include \nvoid main()\n{\n int num[26], i;\n char c;\n for (i = 0; i < 26; i++) num[i] = 0;\n while (①!= '#') //统计输入的大写字母个数\n if (isupper(c)) num[c - 65] += 1;\n for (i = 0; i < 26; i++)\n if (num[i]) printf(\"%c:%d\\n\", i + ②, num[i]);\n}\n```","67b32089303d691c53e86c63",{"_395":396,"_397":568,"_362":569},"## 四、程序阅读题（本大题共4小题，每题6分，共24分）","67b3f96f982256c86fd6a23a",{"_395":571,"_402":265,"_397":572,"_362":573},"程序阅读","输入1，输出结果是（）。\n```c\n#include \nvoid main()\n{\n int sum = 0, n;\n scanf(\"%d\", &n);\n while (n <= 5)\n {\n sum += n;\n n++;\n }\n printf(\"sum = %d\", sum);\n}\n```","67b32089303d691c53e86c65",{"_395":571,"_402":269,"_397":575,"_362":576},"输出结果是（）。\n```c\n#include \nint f(int m)\n{\n static int k = 0;\n int s = 0;\n for (; k <= m; k++) s++;\n return s;\n}\nvoid main()\n{\n int s1, s2;\n s1 = f(5);\n s2 = f(3);\n printf(\"%d %d\\n\", s1, s2);\n}\n```","67b32089303d691c53e86c66",{"_395":571,"_402":271,"_397":578,"_362":579},"输出结果是（ 6 0 ）。\n```c\n#include \nint f(int m)\n{\n static int k = 0;\n int s = 0;\n for (; k <= m; k++) s++;\n return s;\n}\nvoid main()\n{\n int s1, s2;\n s1 = f(5);\n s2 = f(3);\n printf(\"%d %d\\n\", s1, s2);\n}\n```","67b32089303d691c53e86c67",{"_395":571,"_402":273,"_397":581,"_362":582},"输出结果是（）。\n```c\n#include \nvoid main()\n{\n int y = 9;\n for (; y > 0; y--)\n if (y % 3 == 0)\n {\n printf(\"%2d\", --y);\n continue;\n }\n}\n```","67b32089303d691c53e86c68",{"_395":571,"_402":275,"_397":584,"_362":585},"以下程序的输出结果是（）。\n```c\n#include\nvoid main()\n{\n int c[]={10,0,-10};\n int *k=c+2;\n printf(\"%d\",*k--);\n}\n```","67b32089303d691c53e86c69",{"_395":396,"_397":587,"_362":588},"## 五、程序设计题（本大题共3小题，每题10分，共30分）","67b3f96f982256c86fd6a23b",{"_395":590,"_402":265,"_397":591,"_362":592},"程序设计","编程：已知三角形的三条边长，求三角形的面积。要求：三条边长从键盘输入（a、b、c），要考虑数据输入是否正确，能否构成三角形等情况。提示：$s=(a + b + c)/2$，面积为$\\sqrt{s(s - a)(s - b)(s - c)}$。","67b32089303d691c53e86c6b",{"_395":590,"_402":269,"_397":594,"_362":595},"编程：完成一个4位数的倒序输出。要求在主函数中输入一个4位数，然后调用自定义`reverse`函数，将该数倒序输出。如：输入的数为1234，则输出为4321。","67b32089303d691c53e86c6c",{"_395":590,"_402":271,"_397":597,"_362":598},"编程：有一个5×5的二维数组（要求通过键盘为其赋值），求其周边元素之和以及该数组中最小的元素值，然后输出。","67b32089303d691c53e86c6d","actionData","errors"]