c语言编一个学生成绩统计程序

Question

如题所述

Answer 1

#include
<stdio.h>
void
main()
{
int
i,
n,
reno;
float
score[30],
avr,
a,
b,
c;
char
name[30][9];
for(i
=
0;
i
<
30;
i++)
{
printf("%d号的成绩：",
i+1);
scanf("%f",
&score[i]);
if(score[i]
<
0)
break;
printf("%d号的姓名：",
i+1);
scanf("%s",
name[i]);
}
n
=
i;
printf("统计不及格人数:\n");
reno
=
0;
avr
=
0;
for(i
=
0;
i
<
n;
i++)
{
if(
score[i]
<
60)
{
reno++;
printf("%d,
%s\n",
i+1,
name[i]);
}
avr
+=
score[i];
}
printf("不及格人数为%d\n\n",
reno);
printf("统计成绩在平均分及平均分之上的学生人数:\n");
avr
/=
n;reno
=
0;
for(i
=
0;
i
<
n;
i++)
{
if(score[i]
>=
avr)
{
reno++;
printf("%d,
%s\n",
i+1,
name[i]);
}
}
printf("成绩在平均分及平均分之上的学生人数为%d\n\n",
reno);
printf("统计各分数段的人数及所占百分比（分数段为<60,60~79,>=80）:\n");
a
=
b
=
c
=0;
for(i
=
0;
i
<
n;
i++)
{
if(score[i]
<
60)
a++;
else
if(score[i]
>=
80)
c++;
else
b++;
}
printf("<60:\t%.1f%%\n60~79:\t%.1f%%\n>=80:\t%.1f%%\n",100*a/n,100*b/n,100*c/n);
}