whatapp网页版二维码
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#include<math.h>
#include<string.h>
struct student {
char name[10];
int whatsapp已读不变蓝qimo;
int pingshi;
double zong;
};
int max(student s[],int a){//总分最大
whatapp网页版安卓版怎么安装int i = 0,m = s[0].zong;
for(i = 0;i < a;i ++)
if(s[i].zong > m)
m = s[i].zong;
return m;
}
int min(student s[],int a){//总分最小
int i = 0,m = s[0].zong;
for(i = 0;i < a;i ++)
if(s[i].zong < m)
m = s[i].zong;
return m;
}
double pingjun(student s[].int a){//总分平均
int i = 0,sum = 0;
for(i = 0;i < a;i ++)
sum+= student[i].zong;
return sum/a;
}
double fangcha(student s[],int a){//总分方差
int i = 0;
double m = pingjun(s,30);
double s2 = 0;
for(i = 0;iwhatsapp下载安卓手机版中文 whatsapp pc 安装包<a;i ++)
s2 += (s[i].zong - m) * (s[i].zong - m);
return s2&#whatsapp怎么添加好友聊天47;a;
}
double biaozhuncha(student s[], int a){//总分标准差
return sqrt(fangcha(s,a));
}
int get(student s[],int a,int n,int m){//获取n-m分数段的人数(保证n<m)
int i = 0,count = 0;
for(;i<a;i++)
if(s[i].zong>= n&& s[i].zong<= m)
count ++;
return count;
}
int main(){
student s[30];
int i = 0,j = 0;
for(i = 0;i < 30;i ++){
scanf("%d %d",&s[i].pingshi,&s[i].qimo);
}
for(i = 0;i < 30;i ++)
s[i].zong = s[i].pingshi + s[i].qimo;
printf("平均分\t最高分\t最低分\t方差\t标准差\t及格人数\t不及格人数\n",);
printf("%f\t%d\t%d\t%f\t%f\t%d\t%d\n",pingjun(s,30),max(s,30),min(s,30),fangcha(s,30),biaozhuncha(s,30),get(s,30,60,100),get(s,30,0,59));
return 0;
}
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