C语言例题与参考答案4.doc

C/C+语言 第四次上机作业参考答案1 数组转置在主函数中定义一个n（1=n=6）维方阵，并从键盘读入数组元素；编写函数transpose(a，n)实现数组a转置；在主函数中输出转置后的方阵。例：输入 4 1 2 3 4 输出 1 5 9 135 6 7 8 2 6 10 149 10 11 12 3 7 11 1513 14 15 16 4 8 12 16#include #define N 6void transpose(int aN,int n);void main( )int n,i,j;int aNN;printf(Input n(n=6):);scanf(%d,&n);printf(Input the array:n);for(i=0;in;i+)for(j=0;jn;j+)scanf(%d,&aij);printf(Display the array:n);for(i=0;in;i+)for(j=0;jn;j+)printf(%-4d,aij);printf(n);transpose(a,n);printf(Display the transposed array:n);for(i=0;in;i+)for(j=0;jn;j+)printf(%-4d,aij);printf(n);void transpose(int aN,int n)int i,j,t;for(i=0;in;i+)for(j=0;ji;j+)t=aij;aij=aji;aji=t;2 学生信息编写4个函数实现下列功能：（1）函数input() 输入20个学生姓名和高考总分；（2）函数sort() 按高考总分从高到低的顺序排序，姓名顺序也随之调整；（3）函数display()显示学生姓名及其高考总分；（4）在主函数中输入一个姓名，编写函数search() 用顺序查找方法找出该学生。若查找成功，在主函数中显示该生姓名及其高考总分；否则显示查找失败。#include #include #define N 3#define LEN 80void input(char nameLEN,float s);void display(char nameLEN,float s);void sort(char nameLEN,float s);int search(char nameLEN,char s);void main( )int num;char nameNLEN,studentLEN;float scoreN;input(name,score);puts(Before sorting:);display(name,score);sort(name,score);puts(After sorting:);display(name,score);printf(Input student name you want to search:);fflush(stdin);gets(student);num=search(name,student);if(num=-1)puts(Search Failure!);elseprintf(%s s score is %.2fn,student,scorenum);void input(char nameLEN,float s)int i;printf(Input name and score:n);for(i=0;iN;i+)scanf(%s,namei);scanf(%f,&si);void display(char nameLEN,float s)int i;printf(Display name and score:n);for(i=0;iN;i+)printf(%-10s,namei);printf(%.2fn,si);void sort(char nameLEN,float s)int i,j,k;float t;char stringLEN;for(i=0;iN-1;i+)k=i;for(j=i+1;jsk)k=j;if(k!=i)t=si; si=sk; sk=t;strcpy(string,namei);strcpy(namei,namek);strcpy(namek,string);int search(char nameLEN,char s)int i;for(i=0;iN;i+)if(strcmp(namei,s)=0)return i;return -1;3 字符串处理定义两个C源程序文件：fmain.c 和 fstring.c。fmain.c中包含主函数，实现字符串处理功能选项和字符串的输入与结果的输出。fstring.c中包含两个函数delchar(s,c)和strreverse (s)，实现删除字符和字符串反转功能。delchar(s,c)：在主函数中输入字符串和要删除的字符，此函数将字符串s中出现的所有c字符删除；再在主函数中输出删除后的字符串。strreverse (s)：在主函数中读入字符串，此函数实现将字符串s反转；再在主函数中输出反转后的字符串。SAMPLE OUTPUT:1. Reverse a string.2. Delete a character in a string.Please input your choice: 1Enter a string: holidayReversed string is：yadilohWould you like to continue? （y/n）Y1. Reverse a string.2. Delete a character in a string.Please input your choice: 2Enter a string: one world, one dreamEnter a character you want to delete: oDeleted string is：ne wrld, ne dreamWould you like to continue?（y/n）N/*fmain.c*/#include #include e:tempfstring.c#define N 80void strreverse(char s);void delchar(char s,char c);void main()int choice1;char choice2,c,sN;while(1)printf(1.Reverse a string.n);printf(2.Delete a character in a string.n);printf(Please input your choice:);scanf(%d,&choice1);switch(choice1)case 1:printf(Enter a string:);fflush(stdin);gets(s);strreverse(s);printf(Reversed string is：);puts(s);break;case 2: printf(Enter a string:);fflush(stdin);gets(s);printf(Enter a character you want to delete:);fflush(stdin);c=getchar();delchar(s,c);printf(Deleted string is：);puts(s);break;printf(Would you like to continue?(y/n);fflush(stdin);choice2=getchar();if(choice2=N | choice2=n)break;/*fstring.c*/#include void strreverse(char s)int i,j;char t;j=strlen(s);j-;for(i=0;ij;i+,j-)t=si;si=sj;sj=t;void delchar(char s,char c)int i,j;char temp80;for(i=0,j=0;si!=0;)if(si!=c)tempj+=si+;elsei+;tempj=0;for(i=0;tempi!=0;i+)si=tempi;si=0;4 分别用函数和带参数的宏，从三个数中找出最大数。/*函数方式实现*/#include int max(int a,int b,int c);void main()int a,b,c;printf(Input 3 integers:n);scanf(%d%d%d,&a,&b,&c);printf(Max of %d,%d,%d is %dn,a,b,c,max(a,b,c);int max(int a,int b,int c)int t;t=ac?t: