问题及代码:
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff"></span><pre class="cpp" name="code">//计算机与控制工程学院 //作者:孙潇 //时间:9月11号 //问题描述:用程序实现多个文件形式组织并运行 //输入描述:无 //输出描述:输出学生信息 #include <stdio.h> #define MaxStud 50 //学生人数最多为50 #define MaxCour 300 //学生成绩记录数最多为50*6 struct stud1 { int no; //学号 char name[10]; //姓名 int bno; //班号 }; struct stud2 { int no; //学号 int cno; //课程编号 int deg; //分数 }; double studavg(struct stud2 s2[],int m,int i) ; double couravg(struct stud2 s2[],int m,int i) ; void allavg(struct stud1 s1[],int n,struct stud2 s2[],int m) ; cpp文件中定义主函数main
#include"touwenjian.cpp" int main() { int n=7; //学生记录人数 int m=21; //学生成绩记录数 struct stud1 s1[MaxStud]= { {1,"张斌",9901}, {8,"刘丽",9902}, {34,"李英",9901}, {20,"陈华",9902}, {12,"王奇",9901}, {26,"董强",9902}, {5,"王萍",9901} }; struct stud2 s2[MaxCour]= //规定课程的编号从1到6,同一学生成绩记录连续存放 { {1,1,67}, {1,2,98}, {1,4,65}, {8,1,98}, {8,3,90}, {8,6,67}, {34,2,56}, {34,4,65}, {34,6,77}, {20,1,68}, {20,2,92}, {20,3,64}, {12,4,76}, {12,5,75}, {12,6,78}, {26,1,67}, {26,5,78}, {26,6,62}, {5,1,94}, {5,2,92}, {5,6,89} }; allavg(s1,n,s2,m); return 0; }
#include"touwenjian.h" double studavg(struct stud2 s2[],int m,int i) //求学号为i的学生的平均分 { int j,n=0; //n为学号为i的学生选学课程数 double sum=0; //学号为i的学生总分 for (j=0; j<m; j++) if (s2[j].no==i) //学号为i时统计 { n++; sum+=s2[j].deg; } return(sum/n); } double couravg(struct stud2 s2[],int m,int i) //求编号为i的课程的平均分 { int j,n=0; //n为编号为i的课程选修人数 double sum=0; //编号为i的课程总分 for (j=0; j<m; j++) { if (s2[j].cno==i) //课程编号为i时统计 { n++; sum+=s2[j].deg; } } return(sum/n); } void allavg(struct stud1 s1[],int n,struct stud2 s2[],int m) //求学生平均分和课程平均分 { int i,j; printf("学生平均分:\n"); printf(" 学号 姓名 平均分\n"); i=0; while (i<n) { j=s1[i].no; printf("%4d %10s %g\n",s1[i].no,s1[i].name,studavg(s2,m,j)); i++; } printf("课程平均分:\n"); for (i=1; i<=6; i++) printf(" 课程%d:%g\n",i,couravg(s2,m,i)); }
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff"><span style="font-family:Courier New;BACKGROUND-COLOR: #f0f0f0">运行结果:</span></span>
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff"><img src="http://img.blog.csdn.net/20150911093227500?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /></span>
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff">知识点总结:</span>
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff">.h头文件:定义数据类型,生命自定义函数</span>
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff">.cpp文件:用于实现文件中生命的自定义函数</span>
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff">.cpp文件:定义main()主函数,调用相关函数,实现问题求解目标</span>
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff"></span>
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff">学习心得:</span>
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff">实现分割函数的时候,思路并不清晰,不能熟练的进行文件新建和调用。</span>
<span style="font-family:Arial;BACKGROUND-COLOR: #ffffff">但是分割文件会将程序模块化,训练编程思维,简化编程步骤。</span>