程序代码：

#include<stdio.h>
int main()
{
    int score[40],count[11]={0};
    int i,j,grade;
    for(i=0;i<40;i++)
        scanf("%d",&score[i]);
    for(i=0;i<40;i++)
        count[score[i]]++;
    printf("Grade\tCount\tHistogram\n");
    for(grade=0;grade<40;grade++)
    {
        printf("%5d\t%5d\t",grade,count[grade]);
        for(j=0;j<count[grade];j++)
        {
            printf("%c",'*');
        }
        printf("\n");
    }
    return 0;
}