c语言 5-9

 

1、

#include <stdio.h>

#define NUMBER 1000

int main(void)
{
    int i, j, num, a[NUMBER], b[11] = {0};
    
    do
    {
        printf("num = "); scanf("%d", &num);
        if(num < 1 | num > NUMBER)
            printf("range is 1-%d\n", NUMBER);
    }
    while(num < 1 | num > NUMBER);
    
    for(i = 0; i < num; i++)
    {
        do
        {
            printf("NO.%d = ", i + 1); scanf("%d", &a[i]);
            if(a[i] < 0 | a[i] > 100)
                printf("the range is 0-100.\n");
        }
        while(a[i] < 0 | a[i] > 100);
        b[a[i] / 10]++;
    }
    
    printf("====distribution plot====\n");
    int max = b[0];
    for(i = 0; i < 11; i++)
    {
        if(b[i] > max)
            max = b[i];
    }
    
    printf("max = %d\n", max);
    
    for(i = 0; i < max; i++)
    {
        for(j = 0; j < 11; j++)
        {
            if(b[j] >= max - i)
            {
                printf("    *");
            }
            else
            {
                printf("     ");
            }
        }
        putchar('\n');
    }
    puts("--------------------------------------------------------");
    for(i = 0; i < 11; i++)
    {
        printf("%5d", i * 10);
    }
    putchar('\n');
    
    return 0;
}