46 lines
836 B
C++
46 lines
836 B
C++
#include<bits/stdc++.h>
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using namespace std;
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/*
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用随机函数产生100个[0，99]范围内的随机整数，
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统计个位上的数字分别为0，1，2，3，4，5，6，7，8，9的数的个数并打印出来
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*/
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#define MAX 101
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void input(int num[]) {
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int i;
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srand((unsigned)time(NULL));
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for(i=1; i<MAX; i++)
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num[i]=rand()%100;
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}
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void output(int num[]) {
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int i;
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for(i=1; i<MAX; i++) {
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printf("%5d", num[i]);
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if(0==i%10)
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printf("\n");
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}
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printf("\n");
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}
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void cal_num(int num[], int count[]) {
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int i, mod;
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for(i=1; i<MAX; i++) {
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mod=num[i]%10;
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count[mod]++;
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}
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}
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int main() {
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int num[MAX];
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int i, count[10];
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memset(count, 0, 10*sizeof(int)); /* initial count[] to 0 */
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input(num);
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printf("100 num:\n");
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output(num);
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cal_num(num, count);
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for(i=0; i<10; i++)
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printf("%d: %d\n", i, count[i]);
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return 0;
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}
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