Linux C一站式学习 第八章第三小节习题一答案

#include<stdlib.h>

#include<stdio.h>

#define N 100

int array
;

void get_random(int upper)

{

int i;

for(i=0; i<N; i++)

array[i] = rand() % upper;

}

int howmany(int value)

{

int i, count;

count = 0;

for(i=0; i<N; i++)

if(array[i] == value)

count++;

return count;

}

void print_pic(int level_count, int *each_count)

{

int i;

printf(" ");

if(level_count == 0)

{

for(i=0; i<10; i++)

printf("%d ", i);

printf("\n");

}

else

{

for(i=0; i<10; i++)

{

if(*(each_count+i) > 0)

{

printf("* ");

each_count[i]--;//*(each_count+i) is constant, so it can't be lvalue. each_count[i] is variable.

}

else

printf(" ");

}

printf("\n");

}

}

int main()

{

int i, count[10], max;

get_random(10);

for(i=0; i<10; i++)

count[i] = howmany(i);

max = count[0];

for(i=1; i<10; i++)

if(max < count[i])

max = count[i];

for(i=0; i<max; i++)

print_pic(i, count);

}