谭浩强C语言程序设计案例二源程序.doc

#include#include#include#include#define SIZE 300typedef struct studentint number;int score3;STUDENT;typedef enum boolenFalse,TrueFLAG;int accept_data(STUDENT stu,int grade);void show_data(STUDENT stu,int sum,int grade);void draw(int grade);void count(int *max,int *min,double *pass,double ave,double f,STUDENT stu,int sum);void show_data2(int max,int min,double pass,double ave,double f);int main()int sum,max,min;double pass=0;int grade11=0;STUDENT stuSIZE;double aveSIZE,fSIZE;sum=accept_data(stu,grade);show_data(stu,sum,grade);draw(grade);count(&max,&min,&pass,ave,f,stu,sum);show_data2(max,min,pass,ave,f);return 0;int accept_data(STUDENT stu,int grade)int i=0,sum=0,temp,a1,a2;FLAG flag;printf(n请输入计算总评成绩时使用平时成绩与期末成绩的比例，用整数表示:n);scanf(%d%d,&a1,&a2);while(iSIZE)printf(n请输入学号：);scanf(%d,&stui.number);if(stui.number=-1)sum=i;break;printf(n请输入学生的平时成绩和期末成绩：);flag=True;while(flag=True)scanf(%d%d,&stui.score0,&stui.score1);if(stui.score0=0&stui.score1=0)flag=False;elseprintf(n007错误数据！请再次输入学生平时成绩与期末成绩：);temp=(int)(1.0*a1/100*stui.score0+1.0*a2/100*stui.score1);stui.score2=temp;temp=(stui.score1)/10;if(temp=10)grade10+;elsegradetemp+1+;i+;return sum;void show_data(STUDENT stu,int sum,int grade)int i,j;for(i=0;isum;i+)printf(%4d,stui.number);for(j=0;j3;j+)printf(%4d,stui.scorej);printf(n);for(i=1;i=60)p_sum+;for(i=1;i*max)*max=stui.score1;if(stui.score1)=60) p_sum+;*pass=(1,0*p_sum/sum)*100;for(i=0;i=2;i+)totali=0;for(j=0;j=3;j+)for(i=0;isum;i+) totalj=totalj+stui.scorej;for(j=0;j3;j+)avej=totalj/sum;for(j=0;j3;j+)fj=0;for(i=0;isum;i+)temp=stui.scorej-avej;fj=fj+temp*temp;fj=sqrt(fabs(fj)/sum);void show_data2(int max,int min,double pass,double ave,double f)int j;char str1320=平时成绩平均分,期末成绩平均分,总评成绩平均分;char str2320=平时成绩标准差,期末成绩标准差,总评成绩标准差;printf(n及格率=%6.2f%最高分=%d最低分=%dn,pass,max,min);for(j=0;j3;j+)printf(n %s=%6.2f%s=%6.2fn,str1j,avej,str2j,fj);void draw(int grade)int i,j,max,k,temp,x;char screen2244;printf(n模拟直方图n);max=0;for(i=1;imax)max=gradei;for(i=1;i=10;i+)gradei=(int)(20.0*gradei/max+0.5);for(i=0;i=21;i+)for(j=0;j=41;j+)screenij=0;for(i=0;i=41;i+)screen21i=-;screen2141=X;screen00=Y;for(i=1;i=21;i+)screeni0=|;k=1;for(x=1;x=10;x+,k=k+4)temp=gradex;if(temp!=0)for(i=1;itemp;i+)for(j=1;j=4;j+)screen20-i+1j+k=*;for(i=0;i=21;i+)for(j=0