C语言程序设计实践教程

Question

 

Answer 1

定义一个30个整型的数组，遍历统计1-5分各自有多少，printf相应的*号

void main()
{
    int a[30], b[5] = {0};
    int i;
    for(i=0;i<30;i++)
    {
        scanf("%d",&a[i]);
        b[a[i]-1]++;
    }
    printf("%10s%10s%20s\n","Grade","Count","Histogram");
    for(i=0;i<5;i++)
    {
        printf("%10d%10d%10s",i+1,b[i],"");
        for(int j=0;i<b[i];j++)
            printf("*");
        printf("\n");
    }
   
}