Question

C语言考试题帮忙谢谢

编写程序实现：输入一批学生成绩，遇负数表示输入结束，统计并输出各等级成绩的学生个数。成绩等级分为三级，分别为A(90-100), B（60-89） C(0-59)。要求在主函数中输入学生成绩，并将统计过程设计成函数。运行提示：
Enter scores：88 71 68 70 59 81 91 0 60 77 83 -10
A:1 B:8 C:2

Answer 1

编译通过：
#include "stdio.h"
void main()
{
int score,a=0,b=0,c=0;
printf("Please Input Your scores:\n");
scanf("%d",&score);
while(score>=0)
{

if(score<=59)c++;
else if(score<=89)b++;
else a++;
scanf("%d",&score);
}
printf("A:%2d B:%2d C:%2d \n",a,b,c);
}

Answer 2

#include<stdio.h>

void main()
{
double a=0.0;
int count_A=0;
int count_B=0;
int count_C=0;
for(;;)
{
printf("enter score(<0 ----exit):\n");
scanf("%lf",&a);
if(a>100)
{
printf("please enter a correct score!\n");
continue;
}
else if(a<0)
{
break;
}
else if(a>=90)
count_A++;
else if(a<90&&a>=60)
count_B++;
else if(a<60)
count_C++;
}
printf("A:%d,B:%d,C:%d\n",count_A,count_B,count_C);
}

Answer 3

#include"stdio.h"

int d=0,e=0,c=0;
void tongji(int p[])
{
int i;
for(i=0;p[i]>=0;i++)
{
if(p[i]>=90&&p[i]<=100)d++;
else if(p[i]>=60&&p[i]<=89)e++;
else if(p[i]>=0&&p[i]<=59)c++;
}
return;
}

void main()
{
int n,p[maxsize],i=0;
printf("Enter scores: ");
do
{
scanf("%d",&n);
p[i]=n;
i++;
}while(n>0);
tongji(p);
printf("A:%d,B:%d,C:%d",d,e,c);
}