c语言编一个学生成绩统计程序

#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

/=

nreno

=

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)

}

#include<stdio.h>

#include<stdlib.h>

//定义一个学生结构体数组

struct Student{

int id

double score

}Student[100]

//记录实际导入学生个数

int len = 0

//求最高分

void getmax() {

int maxid = 0

double maxscore = -1

for (int i = 0i <leni++) {

if (Student[i].score >maxscore) {

maxscore = Student[i].score

maxid = Student[i].id

}

}

printf("班级最高分为:%.2lf学号是:%d\n", maxscore, maxid)

}

//求最低分

void getmin() {

int minid = 0

double minscore = 101

for (int i = 0i <leni++) {

if (Student[i].score <minscore) {

minscore = Student[i].score

minid = Student[i].id

}

}

printf("班级最低分为:%.2lf学号是:%d\n", minscore, minid)

}

//求总分

double getsum() {

double sum = 0

for (int i = 0i <leni++) {

sum += Student[i].score

}

return sum

}

//求平均分

double getave() {

double ave = 0

return getsum() / len

}

//导入学生信息

void input() {

int id = 0

double score = 0

while (1) {

printf("请输入学生学号:")

scanf_s("%d", &id)

if (id == -1) { break}

printf("请输入学生成绩:")

scanf_s("%lf", &score)

Student[len].id = id

Student[len].score = score

len++

}

printf("信息导入完毕!\n")

}

int main() {

input()

printf("全班总分为:%.2lf\n", getsum())

printf("全班平均分为:%.2lf\n", getave())

getmax()

getmin()

return 0

}

注：此代码运行于VS2017，如果在VC6.0中运行，可将scanf_s改成scanf

并且for(int i=0i<leni++){xxx}改成int i=0for(i=0i<leni++){xxx}即可正常运行

程序运行测试图如下：

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